I mostly agree with this. But the real problem is a meta-problem. Which is that society will never allow this unless everybody becomes some kind of moral nihili

I mostly agree with this. But the real problem is a meta-problem. Which is that society will never allow this unless everybody becomes some kind of moral nihilist ubermensch overnight. Any kind of (recognizable) deontology would have to be left behind completely. And the socially enforced "ick" reflex (which is MASSIVELY strong in most of the population) is something that can really be overcome only by people who are far right-tail in terms of intelligence or creativity or imagination. Read your comment to the average person on the street and see how they reflexively react. People on this site routinely overestimate the quality of the average human (in literally every possible way) because they only work and interact with above average people. I just don't see how we get from here to there, at least not without some massive alteration of humans, which would only really possible with true BCI or some kind of extreme eugenics effort. But in a world where either of those were possible, head transplanation would be a breeze.