I was raised by some of the most abusive people on the planet - enough to be jailed today - and surrounded exclusively by abusive peers.
I’m sorry. Have you considered that they are perhaps not representative of the whole of humanity?
Furthermore, people compulsively fight and kill anyone who isn’t exactly like them
Citation needed. How is there any diversity at all in the world? Not everyone is exactly the same.
The only people who don’t think any person is representative of the whole of humanity are white supremacists.
A sample size of one or a few is never totally representative of billions. Do you think everyone in the world is exactly like Greta Thunberg? People have a huge variety of values and personalities, you can’t boil everyone down to a charcuterie of the particular people you grew up with.