Sorry I mean that I wouldn't want to invest a large amount of time with something I a disagree, I'm all up for listening to other opinions and especially those I disagree with, so long it's civil and I'm able to express my own opinion (Like here and not with a book)
Now I don't know the statics or anything like that, but I would think that pain and long jail time only leads to more anger and instability in people, harder punishment would like to more elaborate crimes and more desperation to not get caught. Personally I think the carrot method might work with some people, recreating a normal life and integrate them in society.
I have no idea tho crime and punishment isn't my realm