What if he thought a god or some other powerful being told him to go on a killing spree and then kill himself or else he would go to hell forever? What if he thought the god or being wanted to use him to punish a society he thought was sinful? I mean, he didn't have any motive for killing the people he did. If he had been thinking rationally, why would he not have gone after people who picked on him when he was in school? And I am not making judgements, and neither is Rubystars. We're just speculating.