Well, for many people it makes sense to trust their own central bank more than a foreign one, especially when their nation is stable.<p>No matter what happens, I can pay my taxes and get food at the bakery in Euro. Even if the Euro crashes.<p>But if I hold Dollar, my government and bakery won’t take Dollar, so I’d have to convert – and lose or make money based on the exchange rate every time.<p>It’s the same reason why bitcoin isn’t effectively used: If you have to exchange currencies every time you try to buy something, the currency is worthless to you.<p>And for a billion chinese people, the Yuan is going to be the currency of choice. For 500 million europeans, the Euro is the currency of choice.<p>But only the US and a handful of instable african or island nations use the Dollar, all combined still less people.<p>For private holdings, the Dollar is going to lose power. (In fact, it has lost the majority of private holdings long ago)