I kind of agree with you. Some people don't deserve to rot in prison. Instead of the death penalty though, I think they should be put to doing manual labor for life instead or something. I feel like giving them death would just be the easy way out for them. There has to be ways they can in a sense "suffer" without dying so they can actually reflect on what they've done wrong. I guess you could defend this by saying if we keep them alive we are also wasting precious resources on them such as shelter , food etc. It's hard to say what should be done but maybe in the future there will be more creative ways to punish criminals than just letting them rot for life in prison or giving the death penalty.
I didn't want to mention the cost of feeding someone for 40 or 50 years, but imagine those funds could be used for good projects.
As about putting prisoners to work, some are working, but the right to work has to be earned. Those heavy guys, very dangerous most likely are not allowed.
Ya exactly all the resources used on them! They get free food. I don't know there just has to be other ways than just working? I know that some do work but i don't know lol there has to be ways worse than death and legal. sadly they can't be tortured or anything.