Summit: I don't know. Of course that's just pixels but i can't force myself to play a bad character in any of the games. I'm a nice guy. I can't play female characters also, it just doesn't feel right. Maybe I take it way to seriously.
I too play mostly goody two shoes (robbing everyone blind and taking everything that is not bolted or nailed to the floor does not count! They don't need em anyway!) although I sometime play the selfish mercenary role (squeese as much money from people who I know can affort it, doing good deeds only to maintain reputation or when I feel like it). Of cource I some time break down and decide to kill everyone on sight for stress relief and to just to see what happens if I do so. Of cource I return back in time using magical Load spell. Sometimes I rinse and repeat this until I'm satisfied :P
Unlike you I have no special aversion against female player characters (I actually have liked the games with female main character). I prefer to play tough female characters, someone that does not need to lean on anyone for support (pretty much as I play my male characters). I really can't properly roleplay a cute, meek or weak female (much less male :P) character. I also play only lesbian female characters. I can't stomach male courtship. Usually how ever playing male gender is more rewarding from male player.
I actually wanted to try playing lesbian in alter ego but unfortunately you can date only males as a female :( Massive oversight!
JudasIscariot: I tried to play evil in most games ....and I just can't do it....no matter how hard I try. Yeah it's all just pixels in the end but damn it is difficult to play evil ....
Probably because the evil options if they are available tend to lean toward the sadistic, brutal and insane side of evilness, not selfserving manipulating brick side of evilness (this is usually the neutral option in most cases.