I do know some of the world's richest people. In monetary terms, they all performed very well. In terms of a fulfilling life, I am less sure.
Now, McDonald's is a very good indicator of the global economy. If McDonald's doesn't increase its sales, it tells you that the monetary policies have largely failed in the sense that prices are going up more than disposable income, and so people have less purchasing power.
The fallacy of monetary policy in the U.S. is to believe this money will go to the man on the street. It won't. It goes to the Mayfair economy of the well-to-do people and boosts asset prices of Warhols... Very happy. Very good for the Fed. Congratulations, Mr. Bernanke.
The monetary policies of the US will destroy the world.