I disagree on a lot of things you say, but I strongly agree with this point.
One can look at current issues in the world, the political fight over precious metals specifically. Asteroid mining could potentially deal with this issue a bit better and circumvent reliance on foreign powers. Say USA doesn't agree with China and doesn't want to rely on their rare earth metals, so they refuse to sell them high end processors or even straight up ban the direct sales. So US then can then get their alternative source of rare earth metals from space instead and avoid compromising their stance.