folks, all we have available to us is a consensus answer, imho.
once technology gets to the point of mining asteroids, the moon, and other extraterrestrial bodies, we're be to the point of one of two things happening. we've be flooded, and therefore overrun with gold, and/or another more "rare" mineral will be discovered, and the fight will be on.
you goldbugs need to hold on to the gold, for better or worse. the rest of us will work to distribute the annual productivity of the Earth amongst the general citizenry, so that only a minimum starve on an annual basis.
