system
Given the following post, respond as if you're commenting on Reddit:
human
Why doesn't [Batman] just permanently or extensively cripple the Joker?

Even in his Dark Night incarnation, Batman isn't afraid to break bones, so what's stopping him from simply rendering the Joker physically incapable if Batman won't kill?
gpt
By definition, villains worthy of Batman's notice are the movers and shakers, capable of achieving very impressive results (even if said results are immoral). If successfully rehabilitated, these people are capable of contributing substantially to the improvement of human society. By the simple act of sending these villains to Arkham instead of letting them rot in prison, the Batman proves that this is a desired outcome- why undercut that possibility by hampering the healing process with added physical trauma?