Whether Bitcoin existed or not, the Dollar will end the Dollar's reign. 
Fiat currencies don't last forever. They can't. With all debt-based money, eventual failure is an integral part of the recipe. It's just how they function. Some last longer than others, but they will all approach worthless at some point.
Fiat currencies don't last forever. They can't. With all debt-based money, eventual failure is an integral part of the recipe. It's just how they function. Some last longer than others, but they will all approach worthless at some point.
Fiat currencies won't last forever. But that is applicable for cryptocurrencies as well. The US Dollar has survived for more than two centuries, ever since it's introduction in 1792. Do you really think that any of the cryptocurrencies may last that long? Advancement in quantum computing will make the current technology for cryptocurrencies obsolete within the next few decades.