This (very popular) sentiment you have can basically be abstracted into the “fear of missing out” meme. It's an unnecessary predicate, it's founded on presupposition and bias, and it's really detrimental to all serious long term analyses.
There's no proof that this personal feeling should be listened to or given behavioral authority, especially when it suspiciously conforms to the aesthetic that is widely shared by many who end up having only achieved a mundane life, despite “noble” projects launched because of arrogant egos. This social phenomenon which sponsors the freedom and agency of people fit only to be busy drones is wasting global resources on bourgeois affairs. Elon Musk and his eventual epic failure at super-industrialism is a great example of this harmful sinful pride.
The “what if” has only served to help overvalue ordinary potential, when that capability should have been limited to simple tasks, industries, and affairs. It's a mind virus riding on the waves of language and the beastly body of rationality, a false reality having been successfully disguised as a legitimate object to perceive within the cognitive sphere of humanity. It is deviation that surely has contributed to the collapse of the great liberal humanism project, the real goal of democracy and its encompassing civilization having been the quiet and stable enslavement of a massive surplus of dull brains and basic bodies. A mass of uninteresting genetic carriers who would do well to never worry about what is outside the scope of their common destinies.
The dialectic that there can be morbid peace if you would just test out the hypothesis that you can become a great man is an incomprehensibly devised thinking trap that can filter out men who don't know what the fuck is going on in the grand universe.
But God (or simply nature) works in mysterious ways and I'm glad that hubris was created to serve as an instrument for learning what not to ever do. And to materially benefit from, salvaging from the failures of future past technologies being a huge possibility to leverage. Your supposed tragedy is my informed opportunity, to paraphrase Jeff Bezos.
EDIT: If you ever invent warp drive or faster than light travel or functional nuclear fusion, I'll be looking forward to the blueprints of such treasures and strategic advantages ;)