Death Penalty: a means of Justice or self-interest?

maybe pulling an act like jigsaw will earn you a death penalty.... or maybe they will just put you into mental hospital....

Problem Solved.We get a huge fucking pit like in 300.
It's dark, and we tell people there are razor blades at the bottom.Then when we kick their criminal asses in, people think they're dead.But in reality, the bottom of the pit is lined with pillows.And the criminals live in an underground city where there's lots of ice cream :D

My entire family just had a big disussion about this the other day with all six of us arguing our points. My parents are both for it, buy my sister, husband, my brother, and me are against it. I disagree with capital punishent not only because it is very difficult to be completely sure of guiltiness and accidental killings have occurred, even with new technology. Also, we felt that it is more for self satisfaction and revenge than actually helping to protect society and deter crimes.

As I said, capital punishment should be reserved for those who repeatedly offend, or who repeatedly try to escape their punishment. Also the current system is complete bs.