I think of it as needed for the species and not for the individual. My and your values currently living have been shaped by our parents and people who we have met. These people have been influenced by the fact that death is inevitable. Our human history has had the inevitability of death looming over it since we went from being non-life to life. I don't think we can judge this based on what I currently would want for myself. My views are shaped around the fact that I can die. And if I woke up tomorrow knowing that I cannot die, I would still have those deeply ingrained values in me.

I'm more worried about the effect on the human species. How would my great great grandchildren act in the world knowing nothing of death or the fear of during from old age? I'm not so sure it's 100% a positive thing and it has the potential to be a very negative thing. Worse than what we have right now.

This is all very fascinating and it's really interesting to speculate though. There's probably just as many arguments in opposition as there are in support.