Americans enjoy their current (highly subsidized) standard of living in large part because we produce a surplus of goods and services that we export to the rest of the world.

If a good chunk of the world turns against the US, such that they refuse to consume our goods and services, then Americans will not be able to continue to enjoy their current standard of living.

This is why "soft power" matters, and it's why would-be contenders such as China have invested as heavily as they have in building up their soft power in LatAm, Africa, and elsewhere.

So yes, enjoy your "hard power," but you'll probably be poor.