yeah, if your "grand scheme" includes the heat death of the universe.
But hey, if it doesn't matter in the grand scheme of things, why do anything at all? Eating? doesn't matter. Breathing? pointless.
It's a loaded question. Advances in spaceflight benefit everyone in some form or another, even if you yourself never make it to orbit.
That's only true if you live in the West. Earth's poor get very little benefit from space.
"very little" is relative in the grand scheme of things
. How many lives of the earth's poor have been saved by weather satellites? How many crops have been saved that fed those poor? It's a loaded question. You can't divorce advances in space from benefits here on earth and there is no way to limit those benefits to only applying to the rich.