What does the idea of punishing people even solve in the first place? It doesn’t help them, in fact it actually hurts them. It doesn’t teach them how to be better people, so they’re likely to do the same thing again. Oh yeah and it wastes resources on punishing these people, resources that could be going to regular people but are instead essentially being wasted to torture someone instead of trying to help them.
I bet somebody’s going to come out of the woodwork and try and argue that prison helps people somehow, by punishing them and making them scared, though I’ve found that making people scared is the wrong way of going about making them into a better person, because scared people just like animals will react, and it’s not pretty when they do.