I believe much of the way prisons handle prisoners does not benefit either. But it’s used for a punishment only. If prisoners are going to be released back into society it’s a win/win to rehabilitate. If they are not their lives can still be changed, for the better, by changing their thinking. There are some prisons that have started rehabilitation and even mindfulness training. If you are not motivated by a good heart then be motivated by the fact it will save us money in the long run.