Not saying the rest of your comment is right or wrong but this part sticks out:

> It's traded the world over by almost every country whether they want to or not. You can buy almost anything there is to buy with US dollars.

That's definitely not true. Most places in the world, I'd wager, do not accept USD, as you seem to think. I can't even begin to count the times I've seen clueless American tourists in South America, Africa, Europe and Asia trying to pay with their "highly regarded" USD and being denied with laughs. And then being shocked at the results.