HN has always had some science content not just tech. Articles about fusion and batteries get promoted here often. If all your other sources are pure software focused it would make sense you dont see aging there.
As for the actual topic. Lots of people talk about fear of death, and i am sure that plays a part. For me though, i think its interesting because people have been trying to increase longevity since forever and haven't succeded yet. There is something fascinating about a problem everyone has tried to solve but still isn't solved.
The median lifespan is ~77 years but some people live to ~115. That's quite a difference. Some of that may be genetics but not all of it. The median person who dies at 95 is doing something different than the median person who dies at 60. The least we can do is find out what.
And maybe if we do, someone could live to be 130, or still be in good health at 95.
As for the actual topic. Lots of people talk about fear of death, and i am sure that plays a part. For me though, i think its interesting because people have been trying to increase longevity since forever and haven't succeded yet. There is something fascinating about a problem everyone has tried to solve but still isn't solved.