"If you really believe I'm as bad as everyone says, and you really hate me like you claim to," he tilts his head slightly to one side. "what's there to be confused about? Shouldn't it be pretty clear cut, if I'm just the devil's incarnate?"

If there wasn't any confusion, he wouldn't be reading any reason to hope at all. It's the maybe. It's the possibility. How can he walk away from that?