You got the situation the wrong way around!!
Fiat currency is the default. It is what everyone follows, and seems like throughout history whoever has attempted to use gold standard has reverted back to fiat after a while, as soon as things got tough.
You are basically arguing there is some reason someone should try gold standard *once again* for the five-hundred-and-one'th time and hope this time would be different.
Why?
Has the human nature changed?
Is your "gold standard" different from all other gold standards used and discarded?
Or is it just that this time is different?
*facepalm*
I mean.. total *facepalm"
Fiat money didn't just come into being.
Notes were originally issued as IOUs for gold deposits. The Dollar was originally defined as a quantity of silver. The GBP was originally defined as a certain weight of gold. the very word "pound" connotes a weight. It was only when the backing of the commodity was removed by government decree (hence the name) that they then became fiat.
With the possible exception of the Euro, there has never been a fiat currency in use that came into existence as a fiat currency, although even the Eur has its roots in the old German Mark which originated from gold weighting
the more you post such idiocy the more you reveal your total naivety on what money actually is. Money is not just numbers written on pieces of paper or digits stored in a banking ledger.
It is actually hard to say. There is a difference between an IOU for a gold deposit, and using gold (or something else) as a unit of account. Gold and silver make good units of account because they are easy to measure and durable. So most currencies (but not all by a long shot) are some how associated with gold or silver. But it isn't necessarily true they started off being backed by gold or silver. Sometimes gold or silver was just the unit of account.
The oldest monetary system that I'm aware of was in ancient Sumeria, where the unit of account was the silver shekel and was by government decree was equivalent to 60 volumes of barley. While taxes were calculated in shekels you didn't have to pay in shekels because there weren't any. There were no government-issued shekel coins, and there was nothing called a shekel that was convertible into silver. Yet we have untold numbers of cuniform tables calculating transactions in shekels. It was just a mandated unit of account.
I mentioned tally sticks in a previous post. Tally sticks were denominated in pounds, shillings, and pence, etc. but were issued by individuals and not convertible to gold. As an aside, Parliament burned down when a store of tally sticks caught fire in the basement.
https://en.wikipedia.org/wiki/Burning_of_ParliamentWhich brings us to the interesting case of the Bank of England, the first central bank and creator of the modern British Pound. The BofE was founded in 1694 when a group of merchants made a £1.2 million loan to William III in exchange for a monopoly on issuing banknotes (which had not previously been issued in England), which were backed by the promise to repay the loan. A few years later the BofE recapitalized by issuing stock and banknotes for £1 million of tally sticks. Tally sticks! An important point here: The modern British Pound originally was not backed by gold, it was backed by a promise to repay debt. You can squint here and say that there was a thing called the pound that preceded the GBP, but the GBP as we know it started life as 100% fiat currency which was 100% debt based and didn't become convertible to gold for over 100 years. That ticks all the boxes of a fiat currency.