Originally Posted by BatLobsterRises
But The Dark Knight doesn't give us a reason why The Joker should be so devoted to the idea of anarchy either. All we have are random lines about what people will do when the chips are down and how morality is a bad joke. Yet he's an absolute in terms of being devoted to that ideal, and we know it to be true.
The Talia reveal does muddle up Bane's motivations at first, but when you think about it he'd have no reason to be saying half the things he said if he didn't believe them. He could have just been portrayed as a brute of few words, but he wasn't.
I think refusing to engage in interpretation leads to a superficial discussion of the film, so that's why I personally persist with it. You are always more than free to counter with your own interpretations.
But with the Joker it works, with Bane it just doesn't. The trilogy takes great measures to show why Ra's and Bruce are the types of people who would be devoted to LOS ideals, yet TDKR doesn't do the same for Bane. Yes he has had a horrible life and everything, but what in particular makes him believe in LOS ideals? Why is he so dedicated to fulfilling Ra's Al Ghul's goals if he was excommunicated? In the end the only motivation explicitly shown is that he loves Talia, everything else is somewhat ambiguous and up to interpretation.