People are fascinated by evil because it's mysterious and it doesn't seem to have a rationale behind it, and the second you say that Hannibal Lector was abducted as a child and he had to eat his sister or something like that, it becomes immediately mundane. The character becomes mundane.
“The reason why I take my life is because I want to go to my wife and boy. My usefulness in this world is at an end. I can not be satisfied in any business and can not be without their companionship.”