Batman shouldn't kill period. If he kills, why wouldn't he use guns in that belt of his?
Batman one time saved Joker from the Punisher killing him.
I really really hate some of these discussions because they are so dumb.
"Batman kills"
"Other heroes kill"
"Superman doesn't talk"
"Other characters don't talk"
How about we stop trying to change 2 characters who have remained 2 of the 3 greatest superheroes of all time and has past the test of time? These are 2 noble and inspiring superheroes.
Nolan didn't have Batman constantly kill. BTAS didn't have Batman constantly kill. Arkham didn't have Batman constantly kill.
But it's ok for the DCEU Batman to kill because we all want a DCEU so bad we'll accept anything.