Terry "If you're broken, prison or ostracising won't work."
Well, lifetime imprisonment would stop the person endangering them?
Ostracising them - if they were on the streets, known as a killer, chances are some vigilante would get them.
if it's an unsolvable problem we're back to
...capital punishment
name, shame, put on register, ostracise and hope a vigilante gets them.
or maybe complete house arrest, how much does that cost? Food delivery etc to be funded from their own purse. which brings us back to...homeless and hungry. Or let them starve at home. That'll bring costs down. Seems a fair punishment for murder. Easy, even, if they've got enough pills in their home they can just neck the lot.
a different form of prison, or capital punishment, is looking better and better right now.