Between the realism about terraforming Mars and the strong likelihood that faster-than-light travel may never happen, is anyone else feeling a bit melancholic? It feels like a possible future has been taken away from us.
But, I think in relation to what you're talking about, I'm more "melancholic" about the concept that something like Star Fleet will never exist. Not that I want to fly around between planets in garishly colored uniforms, but the broader vision of the pursuit of truth, self-betterment, and diplomacy. Not having space travel be a regular thing doesn't have to prevent that, but it does kind of underscore that our society is unlikely to ever develop that :(