I know I'm late to the party, but holy shit did that ending suck.
Had me completely on board throughout the whole film, then the ending just ruined it for me. The line where he literally says, "what do you get when you cross a mentally man with a society that treats him like shit", c'mon - that was such a poorly constructed line. It's doubly unfortunate because Phoenix delivered everything so well, but what can he do with something like that?
Then they treat him like clown jesus and hamfist the Wayne parents death in there - nah. Sorry, but nah. 9/10 until the last 20 minutes, then just, I don't know, it was bad after that bad.