Plants can feel pain and it’s not a creationist standpoint, they just can’t make a visible reaction but they do transmit very small electric charges in reaction to pain. Plants also can react to other things like sounds and it is sometimes used to make them grow better. Also, they can’t scream but they’re still alive so you’re still murdering them.

Animals aren’t tortured cause of the simple fact stress makes their meat bad (and it would be a crime and stupid to torture an animal just cause you can) and sometimes nearly not edible and, if you couldn’t notice, people don’t eat bad meat.

“Lie for youself if you want but not to me.” You can pretend your unhealthy is helping someone but you can’t say to people it is healthy. Vegans face many health issues and are, almost always, very underweight; humans are omnivores and not herbivores. Destroy your body if want but don’t lie to other people and encourage them to do the same.