I enjoyed your reply! I wish I could even begin to define a clear position on issues much simpler than the value of a human mind. I'm fairly Platonist even beyond math, so to me any mind is ultimately a more or less gifted spectator, and hence dispensable. That said, I would gladly agree to extend this modest mind's life span indefinitely.

On the other hand, I have my serious doubts about the psychological resilience of human beings under indefinite life extension, even if carried out flawlessly (big if). I would gladly pay a chunk, more than on anything of this kind, to travel in time and see how this would play out.