In my considered opinion, the profit to be made by permanent settlement in space is nothing less than the survival of industrial civilization, and therefore the survival of nearly the entire human race, along with such amenities as peace, freedom, enough to eat, and the chance to reach a high age in good health.
Poul AndersonHappier are all men than the dwellers in Faerie โ or the gods, for that matterโฆBetter a life like a falling star, bright across the dark, than a deathlessness that can see naught above or beyond itselfโฆthe day draws nigh when Faerie shall fade, the Erlking himself shrink to a woodland sprite and then to nothing, and the gods go under. And the worst of it is, I cannot believe it wrong that the immortals will not live forever.
Poul Anderson