Nothing is more "suitable" and "useful" than hanging a man who kidnaps and rapes a little kid.
Criminals need to fear the law, not scoff at it.
There are too many convicts on death row, imho. Sitting here in the comfort of my home in front of my computer I can pontificate from a philosophical viewpoint on how all those on death row should be put to death...NOW! Gee, what a concept. Staying philosophical and fantasizing of a perfect world, here would be my plan to make capital punishment WORK:
There are very close to 18,250 convicts on death row. Using the Pavlov-dog theory, execute one convict EVERYDAY in EVERY STATE for a YEAR.
That would: