One spends many more years being old, than being young. I have been getting old for a long time and in a decade now, I will, if still alive, be much older.
I do not want to get to be 88 if my physical frailties cause me to become immobile. Nor do I want to live to be that old if a condition of age is a loss of my mental acuity. Should I remain relatively intact, that age could be countenanced. Otherwise, I do not want to live that long.
Looking to the future when I was 20, 30, 40, 50, 60, and 70 was not distasteful. But to think for 10 years from now causes me to feel fraught with uncertainty.
For me, this particular topic is a worry.