To activate monkey neurons, it has to be an indicator of health.
As an example, large breasts indicate health, as malnourishment during adolescence tends to result in smaller breasts later on.
Muscles indicate health as well, so they tend to be considered attractive.
For non health related features, like a symmetrical face, those ones are the non sexual dimorphic characteristics, as those ones you care about transferring regardless of sex. Both men and women want a symmetrical face, basically.
So a large Adam’s apple is both a dimorphic feature and a non indicator of health, so its ignored.
“Small” breasts typically are still large compared to a man’s chest.
There are other factors than size anyways, for any feature. For breasts as an example, symmetry, skin clarity, and firmness will also signal a healthy prospective mate.
“Small” breasts usually actually means “not sagging due to age”, as naturally speaking breasts, cheeks, and the neck of humans are common areas where sagging due to collagen levels can be witnessed in older age, so these are common cited areas of sexyal attraction.
So “small” breasts really just means “not old”, which is fairly normal to signal the health of a potentional sexual partner.
Orgasm is an escape from pain. Humiliation is painful. If you jerk off to escape that pain, it enacts classical conditioning so that humiliation causes your brain to anticipate sex.
Mature women is straightforward, older = more knowledge and capable.
Pretty much everything else you listed is about trust, so I’d say that trust is a very big thing you value in a partner, and due to humans very long time they spend dependant on parents and our community survival strategy, trust is very much a trait that is selected for.
People that are untrustworthy are unattractive, a lot of kinks primarily build on top of publicly shameful acts in private, which is effectively the ultimate trust fall exercise.
Feeling like you can trust a partner with such acts is very very positively reinforced genetically, so it becomes sexually attractive.
In short: because humans live together and make complex communities, trust is important, which means getting kinky is very sexy as it signals deep rooted trust.
Okay, fine, but what about non-hetero attraction and relationships? There’s an entire spectrum of human attraction and sexuality.
I know there was an old study about a genetic factor that would increase the likelihood of, in this case, a male being attracted to other males, but I am confused as to how a germline could propagate a heritable factor that would result in no offspring. I am not an expert.
This one is really interesting. Primarily speaking ants a good example of where this type of genetic expression is taken to its logical extreme.
It’s basically the “aunt” and “uncle” survival trait that shows up in communal creatures. Homosexuality shows up in creatures that both need to raise their young and stay together in herds. So humans of course very much satisfy this condition.
So how’s this relate to ants (and bees and termites too)?
In a colony, technically speaking everyone is the queens offspring, so everyone are siblings.
The queens aletes (prince and princess ants if you will) are only the queens offspring, all the drones dont sexually reproduce.
Yet, the drones all care for the offspring as if they are their own, that’s kinda weird from a survival standpoint right?
Well it’s simple, the drones are clones of the queen, so they also heavily share genetics with the offspring. From a genetic standpoint there’s no difference.
So if the drones take care of the offspring like their own, and the offspring go on to mate, then the drones genetics also propagate. They have a evolutionary pressure to raise the babies despite not having any of their own.
The same occurs for homosexuality. Human babies are a lot of work to take care of, and if you have a sibling you share a lot of genetics, then you have an evolutionary pressure to take care of your nephews and neices. It’s the “next best” option to propagating your own children. The genetic difference isn’t much worse.
So what ends up happening is you have an evolutionary benefit if a percent of your population is born homosexual, as they will help with raising their nieces and nephews, and it turns out this combo has a net higher survival rate than just everyone being hetero.
So over thousands of years we get this gradual pressure to settle on a sweet spot of some % of us being gay.
This is also a solid explanation for the “fifth brother” thing, where every son a mother has is exponentially more likely to be gay. We haven’t fully isolated what causes it (its prolly hormones) but it’s a well known occurring phenomina that the more older brothers you have, the more likely you are to be gay.
Based on the above supposition, it’d 100% make sense from an evolution standpoint for mothers to produce homosexual offspring if they have multiple healthy children, as after a certain point it makes sense strategy wise to have a couple gay uncles/aunts that naturally help their older siblings with childcare.
It’s just way way better for survival in nature if not everyone is pumping out babies, and a handful just aren’t into that but still take care of their family.
To activate monkey neurons, it has to be an indicator of health.
As an example, large breasts indicate health, as malnourishment during adolescence tends to result in smaller breasts later on.
Muscles indicate health as well, so they tend to be considered attractive.
For non health related features, like a symmetrical face, those ones are the non sexual dimorphic characteristics, as those ones you care about transferring regardless of sex. Both men and women want a symmetrical face, basically.
So a large Adam’s apple is both a dimorphic feature and a non indicator of health, so its ignored.
Your genes code for symmetry. Symmetry in the resulting body indicates a healthy upbringing.
But I like small breasts. Am I broken?
“Small” breasts typically are still large compared to a man’s chest.
There are other factors than size anyways, for any feature. For breasts as an example, symmetry, skin clarity, and firmness will also signal a healthy prospective mate.
“Small” breasts usually actually means “not sagging due to age”, as naturally speaking breasts, cheeks, and the neck of humans are common areas where sagging due to collagen levels can be witnessed in older age, so these are common cited areas of sexyal attraction.
So “small” breasts really just means “not old”, which is fairly normal to signal the health of a potentional sexual partner.
Ok smart guy, explain this: I like mature women, ass play, humiliation, and bondage too. Sometimes simultaneously! Take that, evolution.
Orgasm is an escape from pain. Humiliation is painful. If you jerk off to escape that pain, it enacts classical conditioning so that humiliation causes your brain to anticipate sex.
Mature women is straightforward, older = more knowledge and capable.
Pretty much everything else you listed is about trust, so I’d say that trust is a very big thing you value in a partner, and due to humans very long time they spend dependant on parents and our community survival strategy, trust is very much a trait that is selected for.
People that are untrustworthy are unattractive, a lot of kinks primarily build on top of publicly shameful acts in private, which is effectively the ultimate trust fall exercise.
Feeling like you can trust a partner with such acts is very very positively reinforced genetically, so it becomes sexually attractive.
In short: because humans live together and make complex communities, trust is important, which means getting kinky is very sexy as it signals deep rooted trust.
Okay, fine, but what about non-hetero attraction and relationships? There’s an entire spectrum of human attraction and sexuality. I know there was an old study about a genetic factor that would increase the likelihood of, in this case, a male being attracted to other males, but I am confused as to how a germline could propagate a heritable factor that would result in no offspring. I am not an expert.
This one is really interesting. Primarily speaking ants a good example of where this type of genetic expression is taken to its logical extreme.
It’s basically the “aunt” and “uncle” survival trait that shows up in communal creatures. Homosexuality shows up in creatures that both need to raise their young and stay together in herds. So humans of course very much satisfy this condition.
So how’s this relate to ants (and bees and termites too)?
In a colony, technically speaking everyone is the queens offspring, so everyone are siblings.
The queens aletes (prince and princess ants if you will) are only the queens offspring, all the drones dont sexually reproduce.
Yet, the drones all care for the offspring as if they are their own, that’s kinda weird from a survival standpoint right?
Well it’s simple, the drones are clones of the queen, so they also heavily share genetics with the offspring. From a genetic standpoint there’s no difference.
So if the drones take care of the offspring like their own, and the offspring go on to mate, then the drones genetics also propagate. They have a evolutionary pressure to raise the babies despite not having any of their own.
The same occurs for homosexuality. Human babies are a lot of work to take care of, and if you have a sibling you share a lot of genetics, then you have an evolutionary pressure to take care of your nephews and neices. It’s the “next best” option to propagating your own children. The genetic difference isn’t much worse.
So what ends up happening is you have an evolutionary benefit if a percent of your population is born homosexual, as they will help with raising their nieces and nephews, and it turns out this combo has a net higher survival rate than just everyone being hetero.
So over thousands of years we get this gradual pressure to settle on a sweet spot of some % of us being gay.
This is also a solid explanation for the “fifth brother” thing, where every son a mother has is exponentially more likely to be gay. We haven’t fully isolated what causes it (its prolly hormones) but it’s a well known occurring phenomina that the more older brothers you have, the more likely you are to be gay.
Based on the above supposition, it’d 100% make sense from an evolution standpoint for mothers to produce homosexual offspring if they have multiple healthy children, as after a certain point it makes sense strategy wise to have a couple gay uncles/aunts that naturally help their older siblings with childcare.
It’s just way way better for survival in nature if not everyone is pumping out babies, and a handful just aren’t into that but still take care of their family.
Basically it’s quality over quantity!
Wow! I can understand that and it is also totally fascinating. Thank you so much for taking the time to reply.