Comic book nerds grow up to become villains?

is it just me or do the comic book nerds, in fiction of course, tend to become villains. A few examples, in the television show smallville Lex Luthor and his best friend Duncan, both avid comic book readers and "Warrior Angel" fans, both grow up to become villains. In the movie Unbreakable Samuel L Jackson's character turns out to be the mastermind behind everything. Why is it that the nerdy kids who idolize the heroes grow up to become villains. Do they not realize their transformation