The gold standard came into being in the 18th century. It got gassed in WWI. Then, after WWII, it was re-established, sort of. The dollar was made the key financial reserve. It was linked to gold.
There’s a big difference between having the best growth rates and having the worst. And if you don’t know which you have, you’re probably headed to trouble. Which is exactly where the US is headed.
Gold is not an investment; it’s a place to put your money while you wait for a good investment to come along. It’s not a wealth creator; it’s a wealth preserver.