While you're thinking like a cult member money is created by the largesse of the central banks, who guarantee - something or other.
What that something is, no one knows. But it's obvious that without state support it would be valueless. Whatever it is.
Quoting Galbraith (my emphasis):
The modern large Western corporation and the modern apparatus of socialist planning are variant accommodations to the same need. It is open to every free-born man to dislike this accommodation. But he must direct his attack to the cause. He must not ask that jet aircraft, nuclear power plants or even the modern automobile in its modern volume be produced by firms that are subject to unfixed prices and unmanaged demand. He must ask, as just noted, that they not be produced.
More to the point, however, there will always be a state, and it will always "butt in," as you put it.
Because "the state" is really just a euphemism for "the dude in the immediate vicinity who has the biggest stick." And there will always be a dude with the biggest stick.
- Jake If you only spend 20 minutes of the rest of your life on economics, go spend them here.
Exchange rates seem to be a measure of belief in the size of the stick.
Which shouldn't entirely be a surprise, I suppose.