
Why? For religious reasons?
I thought the idea was that you should want to be good.
For civic reasons? One of the constraints is that it becomes impractical to have more than 2 to 3% of the population in jail at any one time. The laws need to conform to the world's priorities: justice without fanacticism. The police are not out to change to world, as the socialists and the Panthers have noted. Mostly live and let live, with the occasional exception.