Sounds like a comfy way to die. But if somebody gets executed, I want everybody to suffer for it. I want the firing squad to look at somebody whose completely helpless and still have to gun them down. I want the jury to look at somebody who already has no chance of harming anybody anymore and to still say their continued existence is violence. I want spectators to every execution, do it in the town square for all I care, so everybody who watches knows that this is how much their fair and unbiased, enlightened liberal state really values their lives.

I do think that bloody, horrific executions are a deterrent: they're a deterrent against executions. They should be (at most) rare spectacles used to excise and obliterate those exceedingly few humans who we have agreed, perhaps on a species-basis, are an existential threat.