I'm not a unwavering supporter of the death penalty. I don't think it should be used often, if at all. I also don't think that it is in any way a deterrent to crime.
I just personally don't want to share a planet with this guy. He walked into a church, and murdered people who showed him love and compassion on a such level that he made the statement that he almost didn't go through with it. But he did, and is on record as saying that he isn't sorry that he did so. Moral reservations and joking aside, I just think he needs to be ended.