Money is Rothschild and Bitcoin is Satoshi Nakamoto...Bitcoin will be a future money and how about cash???will people use cash at future time???
It would be, bitcoin would be the future money! no one knows and theres nothing wrong if we expect that it will happen because in the future innovations in technology would be cooler and i think also they will involve in our payment system or our money, in the future our money will be virtual and it is easy to send and received money wether you are in other country.
I admit that from the current scenario it seems that future is based on digital currencies but bitcoin will not be the only future money every state or country will have their own digital currencies because using only a single global currency is not economical and in fact not possible. It is possible that fiat will be replaced but still this need a long time because many underdeveloped countries are still struggling for the basic needs of their people.