People who worry about death due to old age in their future are always the type who live in such luxury or are at their apex , having exhausted all other worries (and also wrongly project that they'll be in that frame of mind 50 or 60 years down the road).
> Including you
I have no interest in just existing, I want to thrive. Considering that pragmatically speaking it's not possible to thrive at 90, I have no interest in watching other people thrive, so checking out seems like a natural way of solving the issue.