many countries are beginning to think about how to reduce the budget for printing banknotes and metals, efficiency will have a good impact on the allocation of natural resources for other purposes, in this case bitcoin is a strong example of future currencies (crypto digital) and they only need to accept and perfecting the system and regulations, bitcoin is the future because all transactions will look transparent and there will be no more corruption and other skepticism.
Countries will not be worried about the cost of printing money. It is a small fraction of the value of the fiat currencies they actually print. But they will have other interests in mind for switching to a (fiat) cryptocurrency. And that is the ability to track all transactions, to decrease tax evasion and to even implement negative tax rates.
