I think I'm one of those weirdos that is more prone to argue against the death penalty, but not because of human error or corruption (though, those do happen and are good reasons against it), but because I think it's too goddamn swift of a punishment!
If it's proven that some guy rapes a small child, then I say lock his ass in a cell and drive him bonkers. Torture his ass! "Cruel and unusual punishment", you say? Raping children is cruel and unusual! I wanna see him suffer!
Depending on what they did, they're not really going to suffer. For the rest of their life, at a minimum, they have all of their food and health needs taken care of without having to lift a finger. Life in prison's hard, but the state takes care of them. If they did bad enough to be booted into solitary confinement and are only let out for 1 hour of the day, they're safe from any other inmates who may want to abuse them and they still get things like books and music players given to them (so it's not just sitting in a dark cell and being miserable until they hang themselves with their bedsheets).
Also, the whole "I want them to suffer!" bit is another reason why emotional knee jerks aren't allowed in lawmaking.
Uhh, Chitoryu, solitary isn't a bed of fucking roses. Yeah, you'd be safe from everyone else, but isolation will REALLY fuck with your mind in horrible ways. I spent the first six months in the house in which I currently live almost completely alone. My mom and brother both worked, and their schedules were such that I didn't usually wake in time to talk to them, and went to bed before they got home. My dad spent almost all his time at my aunt's house down the road, and we had no internet, so I was pretty much completely cut off from people for half a year.
Wanna know what that did to me? It nearly drove me fucking insane in ways which I'm
still recovering from, nearly 5 years later. Humans are social creatures, we by and large need other humans, or we lose our god damned minds.