Maybe this is not a simple question. As we can see there are several values here and of course cultural behavior. The roots of the question are religious, cultural, ethical and even geographical. The world is divided and the law systems show this division. The solutions, however can lead us to other questions concerning revenge and justice. better to kill a person because of his crimes? Can we admit that a life sentence could be a much better sentence? In fact, rehabilitation is the right way especially with an accurate psychological evaluation first. Some people are lost forever, and in my opinion some murderers and other criminals will suffer more in jail. In this sense, capital punishment is an easy way out.