We should. Really. There was an article on this quite a few years ago. In a Japanese prison, you have ZERO leeway. You obey the guards, period, and keep your mouth shut. No luxuries. And the guards are no allowed to harm you. The result of this "extreme" discipline is that while the US has recidivism rate (rate of prisoners who return to prison) of about 40%, Japan has only 2%. Think about it. Japan has a way of making sure you don't ever want to go to prison again.
"PRISON, SHOULD BE SUCH, THAT ONE WOULD NEVER WANT TO SPEND A SECOND TIME THERE"
How we need this enforced in all penal institutions in the United States (where currently 2% of our US population resides, many of them on their third or fourth stay there!).