This bugs me in so many shows. Like I was just watching Daredevil and there's this whole theme about him not killing Fisk even though Fisk is killing people all over the place while Daredevil is dropping Fisk's henchmen like flies. Oh so it's fine to kill lots of people who got a job to work for Fisk (who is the elected mayor), but not Fisk himself?

Imma be real with how many ways Gotham is like actually straight up just cursed by five million supernatural reasons, I don't think "due process" is really sustainable compared to batman with a gun

Anyone want to write a thesis on the role of morality and killing in HBO's Harley Quinn series? So far it's interesting. She doesn't mind killing people, as long as they're the right people, not only super villains, but polluting company's lawyers. I think the popularity of defending the status quo, usually given to superheroes, is starting to slip away and society is beginning to celebrate villainy out of sheer desperation, as the only hope for change.

So yeah, about Superman suggesting Batman kill the Joker:

One of the things to think about is just how much damage would be done to joker's body over time as a non-superpowered human. Joker's getting kicked to pieces repeatedly. He's not getting Bruce Wayne's concierge medical care. He'd be a maraca of bone shards after the first few beatdowns. Now, he's crazy, so maybe he doesn't even notice the pain, but you have to expect he'd be going around with a garishly colored walker after the twentieth time being thrown through a window onto concrete.

For the most part, Batman doesn't even punish criminals. He stops and detains them, usually using force, and sometimes what we'd call an excessive amount of force. Batman's thing with killing is that he goes out of his way to avoid killing criminals while stopping and detaining them.

The question of killing is not really about punishing them, and so due process doesn't really figure into it.

It’s a real life trolley problem there.

By not killing the Joker Batman leaves him alive to kill more innocent people each time he escapes or hatches a new scheme.