It occurs to me that the Book of Job has a persuasive argument for space travel.
Man is born unto trouble, as the sparks fly upward.
This is surely meant to inspire us to explore the opportunities that zero-gravity has to offer.
Talking of which, why do the crew of the Starship Enterprise always stay on the floor? Even when under attack, when the last photon torpedo has been fired, the shields are out and even the life-support systems are failing, captain, somehow the gravitational field never ceases to function.
I think they have their priorities wrong. Life-support is more important than avoiding weightlessness, people! Especially if, as would seem to be the case, you are born unto trouble.