I think this sort of view is quite myopic. In general space has practically infinite everything - land, resources, energy, and more. It has the potential to enable, in turn, infinite expansion of humanity. But we're not going to get to the endgame without playing the opening first.

The path to international air flight began with often suicidal attempts to flap our arms with various instruments attached and act like birds, with many thinking we'd never go anywhere beyond that. With space we're already a bit more advanced, yet we're far from where we need to be - and the only way we're going to get there is by going out and starting on a very long journey.

We didn't do anything in 1969. Landing on the Moon and leaving a flag is like seeing the Wright Flyer go 260m, waving a Mission Accomplished banner, and then quitting with that as the state of art of flight - a mildly interesting novelty that was, at best, a proof of concept.