That feels scarier to me.
Imagine you could chose to die on your 75th birthday, but in return keep your full 20-something health until then. I'd do it right away.
Ultimately all the human race will die. Over a short or a long span only learning will matter.
On the contrary, talking to my 82-year old professor who is sharper than most college kids but has constant health problems and I wish we could beat aging.
You're right, we shouldn't be afraid of different experiences, but that doesn't also mean that fighting aging is bad. We could apply your arguments to all medical care, but we don't because there's no point in needlessly suffering.
If it is possible to live healthy life past 75 - that would be even better.
Unfortunately none of that is possible to accomplish in the timeframe that would benefit us personally.