I am a very very lazy person. I like to pride myself on being in the running with Lebowski. And to me hate takes way way to much energy. Having even the simple idea of killing has to take some effort. Kind of seems like he just set out on a life not worth living IMO
He wanted to be an artist, originally. His stepfather wasn’t having it, he was rejected from art school, and his step harshly physically punished him while a sibling escaped that (I have a hypothesis on other abuse for that sibling but there are no known facts, so it’s irrelevant). Women weren’t valued either. I firmly believe a different childhood experience may have had a different outcome. Additionally, plenty of celebrated artists also broke rules of art. We won’t ever know for sure.