I think thing that makes Batman so endlessly interesting is that he's one of the most flawed and deeply human characters, even though he seems completely the most inhuman and infallible in costume. Psychologically he's one of the most complicated in both his strengths and his weaknesses. For me, one of his great strengths and weaknesses is that confidence. His emotional self-protection is one of the things that makes him heroic and sacrificing; he doesn't have a personal life. He sacrifices those to be the best hero he can be.