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.

When people talk of life extension and us eventually achieving immortality, it is always "relative immortality" though. Maybe we develop the technology to regenerate our bodies and we could live for thousands of years. Maybe we can transfer our consciousness and minds into computers and maybe live for quite a bit longer than that.

But the time scale of the universe is unfathomable. Even if we lived for millions of years, it would be a drop in the bucket. And that time would still come to an end and we'd reach that same state of eternal nothingness and nonexistence.