Originally posted by steverules_2
The reason batman didn't kill joker is cause joker wanted batman to kill him, to make him cross the line like he did with Dent...but if batman killed joker he knew that he'd be no better than the joker had he killed him, I'm sure batman may have considered killing joker but he wouldn't do it cause he knows that if he killed there wouldn't be much difference between him and joker...I may be wrong in thinking that but yeah 🙂
Have you seen Kevin Smith's Batman mini, 'Cacophony'?
Onomatopoeia gets away from Batman by stabbing the Joker, making Batman choose between pursuing him and saving Joker's life. He agonizes, but chooses to save Joker despite Jim Gordon's protests - "Just let him die!! Just because you don't kill him, doesn't mean you have to save him!"
It turns out that might have been for the best. Joker says later, death would have put him at peace. Because as long as he's alive he'll play the game with Batman and want to kill him; only reason he doesn't is because once Batman dies, he'll have nothing to live for.