A very simple reason why whether or not people want to live ‘forever’ doesn’t matter in the discussion about rejuvenation biotechnologies, plus a couple of thought experiments to better understand the wish to ‘die at some point’ of some.

You don’t want to live forever? Then don’t.

I’m not kidding. It is as simple as that, and I’ll tell you more. If you—or even the entire world, for that matter—don’t want to live forever, it doesn’t mean we shouldn’t develop rejuvenation therapies.

Why? Because rejuvenation therapies do not make you immortal. Being forever young only means you don’t get age-related diseases and disabilities, not that you can’t be shot or run over by a truck, or that you can’t kill yourself. On top of that, you don’t have to undergo rejuvenation therapies if you don’t want to. However, while rejuvenation wouldn’t make you immortal, it would give you more control over you life. If you say you know for a fact you want to die at some point, I’m cool with that, but there is no guarantee ageing will kill you just at the right moment. Ageing could easily take you away when you still had tons of things you wanted to do. On the other hand, if you didn’t have to worry about the possibility of such an untimely death, you could very well decide for yourself when and how you want to go, and be relatively sure it’d happen that way.