Killing is the way Nature works, hunters kills their pray to eat and survive/ populations kills enemys and competitors for survival, killing is part of the evolution. the only danger that i see in death penalty is the unsureness to be killing the right person. Maybe Justice system should be modified to apply instead of INOCENT / GUILTY judgment a LIKEABILITY Judgment, and when is a crime and is completely proven that the person is guilty, COMPLETELY proven with no doubt, (does not happen in the 100% of the cases , but happens) in that case death sentence is fine. and also im not talking about the cost for our society to keep/ feed and medical attention to people behind bars.