@dorotalysik,
I've struggled with this question for decades, and I have never reached a satisfying answer. In my youth, I was very much in favor, figuring that scum didn't deserve a chance to live. However, in uni a couple of friends showed me that was entirely too short sighted on my side.
Ever since, this has been a question I find hard to answer. However, if you were to put a gun to my head, I would have to say yes... But with a lot of safeguards in place, at the very least.