Bullying doesn't affect everyone to the same extent, plus we really don't how much he was actually bullied. Some people are simply not wired as strongly mentally and don't come out okay from it. It doesn't have to come from other kids either, it can come right from your own family. Sometimes having bad parents is worse than having none. This boys parents both had criminal records. Poor and trashy family, article says bullying started over a lisp and stuttering and kept up from there, dropped out of school, etc., etc. Read the article it tells a whole lot more, much better than I can. https://www.dailymail.co.uk/news/ar...l-gunman-brawled-repeatedly-school.html. The guy went off the deep end yes but there was some help kicking the ladder out from under him over the years.