i understand your logic but its a little flawed.

your assuming that in the next 1,000,000 years that humanity wont ever develop a smart enough intelligence to figure out a way to avoid the heat death of the universe,

considering how we are already seeing significant improvements in our ability to literally manipulate matter on a quantum level whos to say that once we figure out how black holes truly work and how they relate to dark energy or dark matter that we wont be able to take advantage of those systems to manipulate the entirety of the universe to eventually avoid the heat death of the universe.

im not saying its guaranteed to happen but knowing that it could potentially happen directly contradicts your logic that out inability to have control over our fate is equal to what our ability to do so would be 1,000,000 years from now. and that logical inconsistency validate peoples anxiety towards the thought of missing out on those intellectual transcendent/enlightening experiences.