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.
“I got a camera when I was nine years old and it wasn't until I was a model that I realized you could be a photographer for a job.”
“I can plod. I can persevere in any definite pursuit. To this I owe everything.”