I read the whole thing and I think it's useful to view this topic under a different lens. The most astonishing part for me is that it was written over 30 years ago!
I'm a bit grateful that science today isn't nearly that advanced. It would be cool to be able to explore the world like the main character, but then again it seemed so sad and miserable.
I share her sentiment from the beginning of the story: I don't want to be immortal. Living a short, happy life is much better than being miserable forever even though you have everything you could possibly imagine. I think death should be treated as a gift and not something to be afraid of (of course I'm probably too young to say this, but this is how I feel currently). It's another motivation for us to enjoy our lives in a meaningful way and not waste them.
Having near-death experiences has made me much more scared of death. I realized I do not want eternal nothingness and nonexistence. I like existing, loving, etc.
I do not think death adds any value. It certainly does not motivate me in any way. I don't do things because I will die, I do things because I want to. Most of the time I am not thinking about death at all. When I do, it is only with a sense of sadness/dread.
> Living a short, happy life is much better than being miserable forever
IMO this is a false dichotomy. You could also live an immortal happy life in this scenario.