Sure it isn’t a good system, but it is the one we have. And if you have concrete improvement ideas, it would be interesting to hear.
I mean, where ever we set the age limit for instance voting to 14, some 10 or 9 year old will feel disenfranchised. We could remove it completely and let toddlers vote. What would the consequences of that be? I have no idea!
There are two kinds of freedom, negative and positive liberty. US has a lot of negative liberties, they dictate little in what you can or cannot do, but is lacking in positive liberty, they don’t support you very well to do what you want to do.
While Europe might have less negative liberty, their generally better social welfare system grants people more positive freedom.