Yeah, the refusal to kill is the worst part about Batman. Like, it's cool that you have a moral code or whatever, but when you keep putting mass murderers like the Joker in a prison you know he's gonna escape from, you should probably think about your life choices. You kind of get why Jason Todd went a little nuts when Batman didn't kill the Joker after he brutally murdered a child that Batman dressed up and put in his way. Holy shit, just shoot the guy in the fuckin face, you know?