Re: disappearing up my own arse
Locking people up isn't primarily about punishment, it's about protecting society from those that wish to do it harm (and with the intent that they can be rehabilitated)). It's also absurdly expensive, and so would be best used only when absolutely required.
And no, I don't believe that a bit of litter picking is an appropriate response to a career criminal, but nor do I think that banging him up and forgetting about him is the answer. Oh, I know, let's just lop his hands off - that'll put an end to his schemes.