The death penalty is the easy way out for a hardcore criminal. Why make it easy for them? People commit suicide to escape life's pain, you want to help relieve the pain of hardcore criminals?

Solitary confinement is perfect. Solitary confinement for as little as a month will drive someone insane. I say we give these people LIFE in solitary confinement. If they survive 20 years in solitary confinement, it'll feel like they've been in there for 100 years.

Problem solved.