He wrote a manifesto, basically describing his whole life. He mentioned in the manifesto that he had had a series of nannies... in other words, his parents did not raise him. He was exposed to pornography at a young age (not by his parents or nannies), and that twisted him.
I only skimmed over the manifesto. He talks about beautiful girls a lot--he was obsessed with them. He did not want to attend a school with girls; being around girls upset him a lot. Clearly, he was not mentally stable.
Wow, I haven’t read his “manifesto” yet. He grew up around people, but was alone.