The demise of the USD and the probable fall of the Euro, Pound and Yen as well will make Bitcoin look very appealing
You could be waiting a long time for that to materialise
japanese debt passed 1 quadrillion yen. more adults in diapers than infants now.
Europe faces the same fate as japan unless at least half of their debt is destroyed.
Politics of regulatory capture makes needful debt destruction impossible. Politicians are owned by the rentiers.
Therefore the monetary system is doomed.
On the day this becomes common knowledge, confidence disappears. Debt based money does not work without confidence.
months, maybe years, but definitely not decades.
U.S. is somewhat different due to "exhorbitant privilege" as reserve currency, so it will last longer unless it takes a decapitation hit. E.g. nukes in d.c. and nyc compliments of putin, or a gold dinar replaces petrodollars.
If fiat falls, bitcoin will fall too. Count on it