So I'm watching the movie for the first time, and there's Batman pounding on the Joker, shouting "Where is he??"
And pounding on Joker again.
And again.
And the thought that was nascent when Q - sorry, Fox - gave Bruce his new toys crystallized: This isn't Batman. This is a thug in kevlar.
When hasn't Batman been a thug?
The entire idea of a vigilante is "I'm going to go out there and break rules to enforce justice -
my idea of justice. And I'm going to beat people up to do it."
All superheroes are thugs. Their worlds boil down to the simplicity of Might makes Right, and fisticuffs are the way to solve problems. It's quaint, but it rarely suffices for stories any more.
Just as Bats makes his own toys, Batman doesn't just beat the snot out of the Joker to get information. He matches wits with him.
That pretty much pulled me out of the movie and kept me out. This Batman is a sadistic college jock, not one of the sharpest minds in the world.
While there is often a childlike assumption behind superhero stories that the protagonist is understood to be Inherently Right and Good,
The Dark Knight is purposefully questioning the very morality of what Bruce Wayne does as Batman. The point of that scene is just what Joker says, "You have nothing to threaten me with. Nothing to do with all that strength." In other words, "Your simplistic solution to the world's ills has very strict limits."
The beating is also symbolic. Not only does Wayne have nothing to do with his physical strength, his financial strength and intelligence are effectively neutered by the Joker's ability to sow chaos, both in Gotham and in Wayne's own soul. Up until that point Wayne
has been matching wits with the Joker - and this is the point at which it starts to become clear that he really isn't any match. What is so relentlessly difficult about this movie, and what makes it so different from most superhero stories is that a Pyrrhic victory is the most Batman can be said to win. Because mostly, he loses to the villain.
I don't care for the Dark Knight. I'd love the see the Darknight Detective.
Sounds to me like you'd love to see a character who is super-smart, super-moral, and apparently owns a super time machine in order to have the hours of the day that would be required to invent major technologies, build them by hand, investigate crimes that baffle the police and physically apprehend criminals. Characters with the magical ability to do everything - are boring.