I don't think it's necessary for us, as observers, to become sadistic and vengeful over it. I'm content to let Scott's Creator deal out the punishment. If he gets the death penalty, that justice will begin more quickly though.
Perhaps you've never lost a loved one to a cold-blooded murderer. I lost a 17 year old brother when I was only 9. It affected my entire family for the rest of our lives. I think being sadistic and vengeful is good therapy. Fry Scott Peterson!