In the case of Gotham? Perhaps both. With Gotham writers have created a sandbox in which crime thrives and there is a necessity for the Batman to enter into the fray. As some Shikamaru said before, the status of Gotham is fundamental in the surge of Batman. That is one of my favorite aspects of the character: he is born out of a need. The fact that the format is serialized makes possible a never-ending battle. That's one of the things I liked from the TDK Trilogy: a sense of fulfillment, a sense of ending.
Yeah, that was certainly one thing I appreciated about Nolan's TDK trilogy, that it had a beginning and an ending. Only a few writers have dared to tell the story of Batman's ending, and while TDKR is probably my least favourite of the 3 films, it still does a good job of resolving most of the issues that surround Batman - and we get the emotional payoff of seeing Bruce walk away and get on with his life.
In the point of Bruce satisfying some sense of revenge (be it for the reader, or the character himself), I don't really buy it. As much as Bruce likes to yell that "I am vengeance, I am the night...", most of the great stories don't play it like that. At least for me, I tend to lean to stories in which Bruce Wayne becomes Batman because he doesn't want to live in a world in which eight years old children lose their parents because of crime, instead of avenging his parents deaths. It is a fundamental difference.
Maybe. Maybe that's the justification he uses to dress up like a Bat and fulfil his desire for revenge. Who knows ? Batman's such a complex character, that's what makes him so engaging.
I guess because Batman is serialized, as you pointed out, we never really know the net effect of his actions,
Like if we could measure all the good he does:
- like overall crime reduction
compared to all the problems he causes:
- undermining police authority (vigilantism), property damage and being the focus for villians like the Joker. Also, for every thug he takes out, another seems to take his place (so are his actions having any long-lasting effects).
What would the net result be ? There's a perception I think that Spider-Man (at least in the films) makes New York a safer place. In The Dark Knight, at the beginning there's a clear indication that Batman is having a deterrent effect on crime ( the 2 thugs conversation by the car, and the scarecrow's comment "If Batman left anyone to buy from").
Of course that all goes to hell with the Joker's arrival.
Frank Miller really captured the flavour of the debate in The Dark Knight Returns, with his representation of how the media portray Batman, saviour or sinner.
Conversely, I think the appeal of Superman is that he's a much simpler chraracter (that doesn't make him less interesting, just less complicated). Usually when Superman shows up, things have gone to hell, and he has to sort them out.
I guess the big question that hangs over Superman (which is what Tom Taylor is dealing with in the INjustice comic book) is what happens when Superman goes too far in trying to make the world a better place.
I always liked Superman IV: the quest for peace, not because it was a good film (it was crap) but because the idea, that Superman one day would say "Enough is enough, I'm going to save the world, from you idiots." was quite a compelling one.
But back to Batman, maybe what we like about the character is that he dances on the knife edge between being a greater force for evil, and a greater force for good.
Maybe that's where we like him, and that's why he can't kill the Joker.
Perhaps an interesting story would be someone impersonating Batman killing the Joker, and then Batman having to solve the murder and exonerate himself. Maybe I'd just like to see the Joker die - I remember feeling very satisfied at the end of Batman 1989, when the Joker hits the pavement.
Cheers !