If anyone kills a person, the murderer shall be put to death.
The Bible — Numbers 35:30
The dignity of human life must never be taken away, even in the case of someone who has done great evil.
Pope John Paul II
Each of us has, to some degree, an unhealthy capacity for revenge. And that trait flows from us as individuals into society at large. This unflattering characteristic is one of the driving forces behind capital punishment.
As opposed to many political or cultural debates, there is no middle ground in this. You either want to string killers up or you don’t.