The prime objective of every species is to reproduce and make progenies similar to its own. Of course, On a larger scale, they evolve and become better in terms of survivability and reproducebility. However, reproduction capability is not a static phenomenon and varies accordingly throughout an individuals' lifespan. Nowadays, a substantial proportion of scientific establishment is searching for molecules that could enhance an individuals' life span. But, do the solutions for longevity we are searching for has anything to link with the reproducibility Or we are just focusing on manipulating the processes of ageing. With a growing population of sterile individuals or many of us who do not want to have children, enhancing life expectancy in old is how much rational. We have seen a large population in Japan having a prolonged life span compared to worlds' everage, but they apparently have a meagre fertility rate. I also agree that there might have myriad other ways for this, but it is also true that fertility drastically decreases with increasing age . Therefore, in my opinion, increasing the life span of a sterile individual does not sound promising for the existence of our species. What do the brainstormers think about this?
The survival of our species is not endangered until reproduction is not endangered. Now the population is steadily increasing and the problems we are facing or might face in the future are more related to overpopulation than underpopulation. Only increasing the lifespan of the individuals (without making older ones more fertile) would already greatly add up to overpopulation, not to talk about increasing it indefinitely. If we would then additionally make all the individuals indefinitely fertile this would be a population boom. And we would need to colonize other planets quickly.
I see it more as saving the individuals rather than the species.