Disagree. My argument is not a conscientious one, nor an issue of squeamishness, but of an understanding of law and the inherent fallibility of such. In virtually every instance of a guilty, or not guilty, there is a measure of doubt. Indeed, case after case is reversed on appeal, due to faulty data, retractions, even deliberate malfeasance.
With the knowledge that you may condemn even one innocent person to death (and yes, it has happened many times already), can you honestly condone the practice?
And then we travel the distance, to China's borders, where the death penalty is doled out for profit, a tour bus of dissection romping from one detention facility to the next, injecting prisoners and then promptly removing their organs, a government that confesses to their profit agenda, their black market organ sales having since been outed by investigative journalists.
At what point is the death penalty acceptable? Is it at the point you don't know, or at the point you don't care?