I don't trust a dollar, yen, or euro that is based on debt. A bank prints these dollars and loans them to the government at interest (anyone trying to create a different currency is slaughtered, preventing them from devaluing these toilet papers). The government is forced to borrow those toilet papers, at interest, and they must be paid back with newly printed and borrowed toilet papers. This kind of "currency" is beyond fiat--at least fiat currency, made responsibly, could theoretically be sound. Debt based currency cannot.
Eventually, people will all lose trust in this debt based currency. Hyperinflation is the result, and you had better have gold, silver, other hard assets, or a skill to barter with when that happens. At that point, being a quintillionaire is useless when it takes a sextillion toilet papers to buy a loaf of bread and prices are going up 30 digits per day.