I've never thought about the infinite vastness of space that none of us have the ability to comprehend and imagined how pointless our lives are. But like you, it does make me wish our life spans were much, much greater. What advancements would we witness if our avg. life expectancy was 500 or 1000 years instead of 78 or so? None of us posting are even going to reach the year 2100. Just incredibly frustrating that there might be something that happens or some massive discovery or new tech that occurs in say, 2150, and none of us will see it.
Whole thing is wild though. We know quite a bit about our own solar system, yet we've only been to the moon and there are still millions of species and organisms yet discovered on Earth. We're able to see so far away with this telescope, yet there's no conceivable way to put a human or a machine outside of our own galaxy.