I'm usually the paragon of virtue and altruism, offering my aid for no pay whatsoever, protecting the innocent and the needy. I'll go to the ends of the earth just to deliver someone's dry cleaning. And do you know why? The XP. All the lovely XP. Because even the most pointless fetch quest will give me some of those sweet sweet points!
I'm a kleptomaniac who'll steal everything and anything that isn't nailed down as long as it doesn't have any long-tern negative effect on me. I'll rob children, the poor, the sick, the needy and the helpless, just as long as that doesn't get me into trouble (it usually doesn't).
I'll exterminate any life form that isn't classified as friendly by the game, just to get even more XP and loot. I'll stop my hunt for the Great Evil Black Dragon to murded a badger in the forest, just on the off chance that one of his body parts might be worth a few copper. Also, that 1 XP that I get for killing him might just be that one point that I need to level up...
My RPG characters tend to be walking contradictions...