The latest episode of the new show Peacemaker brought up a debate that everyone has been talking about for years, if not decades: Should Batman kill? In Peacemaker's opinion, he should be, because then there wouldn't be so many villains walking in and out of Arkham. There are a lot of fans who feel this way. This has extended to other superheroes as well. The last new episode of the Flash had the team divided over whether or not to let Thawne die, and a lot of fans felt that they should have.
The act of killing is not one to take lightly, though. The Punisher in Marvel Comics is seen as a bad guy because he kills people.

https://comicbook.com/dc/news/should...ation-podcast/

The question is: Should any superhero kill?