The thing is, people don't consider themselves 'evil' (unless they're cartoon characters). They generally believe they're doing good or don't think of the consequences, or believe they're doing morally questionable things for the greater good.
I usually play a character who is good, but is willing to do forbidden magic or science just to see what would happen, because of curiosity.
Sometimes I play a character who has gone through a lot and so has become hardened and only has some close people s/he cares for, but is willing to do whatever it takes to protect them.
Both the kinds of characters that could easily be the villain for another character.
However, if the world is cartoonish, and everyone is insane/a jerk, I can enjoy just playing a cartoonish supervillain. Like in Saints Row 2.
Delerien said:
Right now i can't think of any game where i think being evil actually worked. In Dragon Age, Neverwinter Nights and generally in games where you're out saving the world, being a dick to everyone you meet just feels completely out of place.
Depends on your definition of 'evil', but in a game like DA:O, even if your character has no empathy and hates everyone, it can still make perfect sense for him/her to save the world, because s/he is living in it.
I made a female human noble in one of my DA:O-playthroughs, and played her as someone who just manipulated everyone to get power (and eventually get growned as a queen), was racist and anti-mage (but not cartoonisly so, it just made sense considering her upbringing) and I ended up despicing her and feeling bad for Alistair for manipulating him to marry her...
She was pretty nice, if snobbish, to people she thought she could get something out of, but did show her anti-magic/racst attitudes, and would jusitfy all kinds of shit with her religion.
In contrast, my other character was a mage who lacked social graces, having taken away from her family as a kid and been imprisoned in the cirlce ever since, so she was a jerk to people and would steal their stuff, but wouldn't consider elves or dwarves any worse than humans, and would genuinely try to help people a lot of the time (apart from her cleptomanic tendencies)