Today, at a rough 2017 price of USD 1,145.90, all the gold in the world is worth 1.25 trillion dollars
With a 2017 GDP of more than $18 trillion, the US economy represents more than 20% – or more than 1/5th – of the entire global economy. Gold is worth about 7 % of US GDP, which makes is not too useful as a medium of exchange.
Jesus: Hey, Dad? God: Yes, Son? Jesus: Western civilization followed me home. Can I keep it? God: Certainly not! And put it down this minute--you don't know where it's been! Tom Robbins in Another Roadside Attraction