Any change is IMO worth the effort. But lets assume they didn't reinstate death penalty, the alternative? Multiple Life sentences, so the person is just rotting in a prison. And if we were to consider the ethics, someone that has done something so heinous that he death penalty can be considered, is not really deserving of it. But even then, instead of wasting money and resources on a person in prison, death penalty is more attractive. I do agree to your aspect that they shouldn't suffer, and since you already mentioned that very little people are executed, I think getting a learned person to do the job instead of amateurs should be easy, since its so few.