I have read a number of books about serial killers. Why are they often known by their full names, like John Wayne Gacy?? How often does that happen in other crimes? For example. Bernie Madoff isn't known as Bernard Lawrence Madoff (I had to look it up, I confess).

Seriously, though, serial killers are interesting from a psychological and sociological POV. Why are they almost always white males in their 30s? What happens to create them?

Ted Bundy is a good example. No physical or sexual abuse in his childhood, he was brought up by his mother and grandparents, who seemingly gave him a loving home. Granted, he thought his grandfather was his father, and maybe that can screw with your head, but make you kill dozens of young and beautiful women?