All the more reason to go to the Moon.
As Podrock said, asteroids have concentrated amounts of resources, and over the course of its history, the Moon has been impacted by countless asteroids and comets. Most of these materials are still there, buried under the surface. If some of the comets hit with a low enough velocity, then they too could still be fairly intact and supply enough volitiles and organic compounds to last for millennia.
A program to fully catalog lunar resource deposits from orbit could be done at a very low price.