I read a funny short story about why Batman doesn’t kill. As it turns out, he has a penchant for sodomy, but refuses to admit this to himself. So he rationalizes his use of sodomy as punishment to the villains he captures. And then he lets them go, instead of turning them over to the police, because they have been punished. This is why they are never sent to prison for years.
Unfortunately, his arch-nemesis The Joker enjoys being sodomized, which makes Batman very conflicted.
Um, what? Zat?
Ha! Sounds like it was written in the same vein as Larry Niven’s “Man of Steel, Woman of Kleenex”