I disagree, but not for the reasons that most of people say, but for this reason: Really badass criminals know that if they get caught, they are going to the death row knowing that will die in a short period of time. But instead of that, if they know that will spend the rest of their life in jail (that means a lot of years, until dying of natural causes), they will think twice before committing a crime. So I believe that a life sentence is better than the death penalty.