If you don't understand the FIAT system, just read rule 11 of Monopoly❗
This is the reason why you should own $BTC
MONOPOLY
11. What if the Bank runs out of money?
Some players think the Bank is bankrupt if it runs out of money. The Bank never goes bankrupt. To continue playing, use slips of paper to keep track of each player's banking transactions - until the has enough paper money to operate again. The banker may also issue "new" money on slips of ordinary paper.