Of course it might cost a lot less if we didn't need to pay for unprovoked attacks on countries like Venezuela and Iran.
What if they didnt try to kill us tho? What if the world is so interconnected now, that we actually could hold hands - especially if we already had those asteroids already at the Lagrange points - if we were "post-scarcity" as a species, what would be worth fighting over?
We absolutely can, and will, go get those asteroids.