In answer to the obvious question: How did he think he would get away with this? What was his end game? The only answers are (1) people don't commit crimes unless they think they will get away with it - everyone in prison had a plan for avoiding prosecution, and (2) There are some really really stupid people in the world who simply can't see or project beyond one or two steps. This may be because of drug use or environmental conditions (lead paint), or because they just aren't super bright. The world is safer with him in prison.