I somewhat agree about the diminishing marginal utility. However, the real criticism is actually in the fundamental goal. The ultimate point of everything is t

I somewhat agree about the diminishing marginal utility. However, the real criticism is actually in the fundamental goal. The ultimate point of everything is to create sustainable civilizational progress that eradicates suffering and provides the good life to as many people as possible. Simply living longer doesn't help achieve that. Indeed, it would cement unequal power relationships. Rulers, especially those who rule for life, would be in power for much longer. There would be compound interest over longer timescales, without the asset division that happens upon death. Of course, a good counterargument is simply that such medical progress is inevitable. But if so, the point would not be to simply fund efforts to push it forward. The point would be to fund efforts to distribute the benefits broadly, and find ways to constrain the downsides.