system
Given the following post, respond as if you're commenting on Reddit:
human
CMV: If you can anaesthesize a human for surgery, all executions can be humane and painless

I do not understand why—if they can put a human being to sleep to the point that it does not notice being cut open and having its heart replaced—there is any difficulty in "humane executions" for states. Why would electric chairs, firing squads, hanging, lethal injections and anything else even be needed?

Put the convinct under general anaesthesia and then chop off its head—as humane as capital punishment can get.

In fact, the government where I live offers government assisted suicide for those that no longer wish to live. One takes a pill, goes to sleep, and never wakes up again.

If they really want humane executions, why not use something like that?
gpt
Probably a few reasons -

1. Need an anesthesiologist to do it correctly - and they take the Hippocratic oath so they would not be able to take part in an execution. 
2. The companies that make the drugs for anesthesia do not want those drugs to be used during executions.