I actually think it can be WORSE punishment for a violent offender to be in SuperMax, than killed. Do you know what their days consist of? 23 hours a day in a cell alone. A shower every 3 days. Very, very basic supplies. No mags, movies, or TV. No good food. No smoke break. They get to walk in a small pen for an hour. That's it. Imagine doing that for the next 50-60 years of whatever's left of your life.
Some of these monsters WANT the death penalty. Easy way out. I think slow torture, being so isolated they start to go crazy, talking to themselves and shit is far worse than relieving their misery. Agree or disagree?
The only thing I can think to do that's worse, is add beatings for little to know reason at all. Tasers. Yeah. That would be worse than just killing them.