I am less than thrilled with the showing us how bad Sam was looking for Dean. To me this is just another time when Sam=bad, Dean=good. I mean if they are really going to have Dean as a demon be less bad than Sam as a human, what's the point? That simply makes it that Sam can never, ever be a good person, while Dean can do whatever he wants and still remain the "good guy". So I'm really leery about this storyline.