Bat-motivations

As the movie obviously showed, Nolan gets the character...

Box Office Mojo > Features > Wing Kid - An Interview with Christopher Nolan:

"The reason to me he's heroic is because he's altruistic. He's trying to help other people with no benefit to himself and, whatever motivates him—and this was the tricky thing to really try and nail with Batman Begins as opposed to previous incarnations—is the difference between him and a common vigilante, the Punisher or Charles Bronson in Death Wish. To me, the difference is he is not seeking personal vengeance. We did not want his quest to be for vengeance, we wanted it to be for justice. That's what sends him looking for an outlet for his rage and frustration. What he chooses to do with it is, I believe, selfless, and therefore, heroic. And that, to me, is really the distinction—selfishness versus selflessness—and that is very noble. But it is a very fine distinction. I do think he is a heroic figure.

BOM: But he does gain a value—justice is a value, even to Batman. Is he really selfless—or does he want to have a life to call his own?

Nolan: To me, he's not selfish in terms of how the word is generally understood—he's not obtaining personal gratification in an immediate sense. He's having to obliterate his own immediate [short-term] self-interest.

..."It's interesting that you say that because, particularly with Batman, there's a demand, particularly from the fans, that you treat it with appropriate darkness and, to me, it was never about making a darker film. It was about making a realistic film and, to me, there's great [virtue] in the character. The discussion we were having about heroism is something I've thought a lot about Batman because, yes, you can make him very dark but you can't ignore the question of his heroism and his inherent ability. Otherwise, he ceases to be Batman—he becomes a different character, the Punisher, the Crow. The fans can argue about what defines Batman, but the heroism—the positivity of what he's actually doing—isn't up for discussion. Again, it's not just about making him darker—it's about making him more realistic."