We already know that everything in Adam's life in the emotional aspects came down to concepts of attraction to children. he was a bisexual pedophile and based his attack on a very simple sentiment: sadism. children are much more defenseless in risky situations than adults or young people, and Lanza felt superior, equating them, with animal prey, with a thought of predation. the famicide produced by him while his mother was sleeping was also due to this and the deaths of the teachers was only an addition. the focus has always been on attacking children and the defenseless.