That's the heart of the matter. The question of "Should Batman kill the Joker, or allow him to keep escaping and killing" is a false dilemma. Because it's not a binary one or the other choice, because there are other ways Batman could neutralize that threat. Break all his bones every 6 months, use his tech to make the most advanced prison on earth, get Mr. Freeze to freeze him, launch him in the phantom zone or another world, ect. And it's not a matter of saying "The justice system in the DC universe just sucks either". For one thing, it's far removed from reality. (IRL the "insanity plea" defense usually means the perp didn't understand what he was doing was wrong, which dosn't apply to the Joker, and IRL we don't have issues of serial killer terrorists breaking out of prison like clock work). And for another thing, there are lots of way Bruce Wayne could use his influence to solve the issue working *within* the system. I'm not even talking bribes, he could lobby for laws to change, pay to make Arkham the best prison in the world, etc.Dragon Ball Fan wrote: ↑Sat Aug 17, 2019 2:56 am if comic writers want me to believe the justice system works and uphold the no killing rule then, here's what they have to do, the next time the Joker or Major Force are arrested, that's it, they stay locked up and are never in the comics ever again.
There is really only one explanation for why super villains keep coming back: to sell more comics.
I usually like to come up with in-universe explanations for things, but really there is no possible explanation. It happens sometimes and we have to handwave it. Just like there's no explanation for why with all the advanced tech Marvel or DC's earths haven't started colonizing space yet. Or how Batman can use a grapel gun without his arm being popped out of it's socket. Or why Mr. Fantastic once invented a universal translator, and it somehow failed to make any sort of impact on society.