So it is okay to put an innocent person to death? You, your brother, father, neighbor sentenced to death for a crime they did not commit? And put to death by an enlightened society?
You passed over that little tidbit pretty quick. IMHO any system that puts one innocent person to death should be abolished and replaced with life without parole.
As mentioned earlier....15,000-20,000 murders a year, 46 executions. I think we're being awfully careful to avoid those errors. You're more likely to die from falling space junk than to be wrongfully accused of murder, much less charged, tried and sentenced to death.
Have you or anyone you know been wrongly accused of murder?? Me neither.