We can't 'force' this kind of knowledge to appear, but we can concentrate on research to speed-up the discovery of such knowledge. We have no way of saying that there isn't a reason, all we can say is that we don't know it.
Let's say there was an island that was Uranium rich and hard to reach in ships. If we were in the 1800's, would it be worth the cost of building ships to get there? The answer is obviously no. These days, however, it certainly is.
We are dealing with unknown unknowns. Both in the substances the moon can provide, and their possible uses. All we can say is that with our current knowledge, we do not have an economic reason to go to the moon. Find some abundant power source, like in the movie Moon, then it will be economically viable.
Scientists can be impulsive beasts too, ignoring the facts and trying to prove their hypothesis. They can even contribute work to a hypothesis, when they don't even believe it themselves (maybe even trying to disprove it). Schrödinger and Einstein had a rather negative view of a lot of quantum mechanics, but they both made large contributions to it.