Eye For An Eye.I don't think the concept of eye for an eye is an effective grounds for punishment, especially iif we want to call ourselves a 'civilized' society.
If a thief steals $1,000 do we just deduct that amount from his bank account?
Surely that punishment isn't sufficient.
Do we simply burn down an arsonists house?
Surely that punishment is excessive.
So why is it justifiable to murder a murderer?
"But what if someone raped and murdered your family? I'm sure you would want them put to death."
I probably would. But there is a significant difference between revenge and justice, a difference that is very easily overlooked with strong emotions present.