You people are making a big assumption, that we know for a fact that the people we are executing committed the crimes they are being executed for.

Mistakes happen.. how will God feel when you execute an innocent person?

Nothing can ever be proved to be absolutely true, even with a confession. No system can be perfect. Our society needs to be protected, but there is no way to prosecute the guilty without nabbing a few innocent once in awhile. Going to prison for the rest of your life when you are innocent is pretty bad, but at least you get a life and can see/write your family and someday the truth may set you free.

We are fallable, you should know your limitations and act accordingly. To do otherwise is evil.