I don't think the analysis is the same for someone who chooses to die at 36. At 72 you already had the possibility of living a "full life". Meaning had children

I don't think the analysis is the same for someone who chooses to die at 36. At 72 you already had the possibility of living a "full life". Meaning had children, see them grow and probably have families of their own; have a career, and even probably changed it a couple of times... At 36, all of that is physiologically not possible. At 144, I imagine probably not much have happened in the last 60 years... Unless increasing the probability of losing a loved one over some kind of accident. To me, that is not very appealing... Living a healthier live at my 60s and 70s, and be able to be rock climbing with my grandsons and daughters definitely is... Most probably that will translate to longer life expectancy, but I don't think that by itself should be the goal.