@Anakara: (EDIT: I got the avatars confused...): I prefer to think of the protagonist as someone who has trouble expressing their emotions, so they just act like an asshole, but all they really need is a hug. It makes me feel bad for the main character and makes the game a lot more compelling.
@Pyra: Then I just play though the "Good" story line. That's what I'm doing now with Infamous 1.