We have come across so many national currency becoming worthless and recently we have heard the news of barter system in Zimbabwe due to the fall in the value of national currency but what really makes the Fiat worthless? Is it corruption or war or national economical crisis? Or the National GDP which makes it fall?
I think fiat currency becomes worthless when it becomes too inflated, or when people stop trading it all together and start utilizing another type of currency, usually a stronger foreign fiat. The the U.S uses a fractional reserve system through the federal reserve, so the dollar is no longer backed by a gold standard I think. Money is real complicated, there are many systems that make it work. I honestly don't know the full mechanics of the monetary system. I'm in doubt about crytpo currency ever completely replacing fiat, at least not any time soon, as it is way easier for the modern man to use fiat cash. You can simply exchange physical fiat faster for transactions than having to whip out your smart phone or ledger and scan a QR code and send a transaction, then wait for it to be approved
In order for cold hard cash to be replaced, you'll have to put a smart phone in every single persons hand, including those who are poverty stricken, in remote areas, etc. Seems like its much easier to deal in physical cash for now. Who know 20 years from now?