Always a pleasure to get feedback from you @whack.science. I'm really pleased to hear that the Socratic approach to inquiry worked to get your head spinning around this topic! I also think that living forever is appealing until you really think deeply about what it would truly mean to live forever. I remember seeing an episode of Star Trek: The Next Generation in which an immortal entity named 'Q' showed the captain of a starship what his immortal world looked like. All he could do was provide a simple metaphor for what it was like when he took the captain to a dusty farm and explained how dull and boring it was and how he'd like to have the chance to die. He showed the captain the scarecrow and mentioned he had even been the scarecrow just to see what it was like. The boredom immortality would have the potential to bring would be its own curse. I agree, 400 to 4500 years will be plenty. That may be the route humanity ends up taking. Thanks a lot for your thoughtful comment. Take care @whack.science!