Ok, In the first half, it was obvious, that the writers had made Batman into an asshole just so they can have an emotional 3rd act.

But the entire 3rd act was such a bullshit compilation, that now, I cannot think of any part of the movie, that was actually good.

This movie was such an arbitrary set of actions.
Oh, I have just murdered an entire evil group. Why? for power, that they no longer hold.

Why? For respect of a boy... I should kill that boy now, even though.

Why? For freedom of course. And now, that I am free, I might as well kill myself.