So even if @De-Villefort is right and all genres except for sci-fi and cyberpunk are filled with nothing but bad terrible people…
So what?
Sometimes it’s fun to play the villain. Do you think that any actor that gets the role of a villainous type absolutely hates their job while doing so? Do you think Alan Rickman or Christopher Lee cried in anguish every morning they woke up before going off to play their various famous villainous roles?