it will not replace money just another world currency.
As I understand the whole topic,,,that right there is the crux of the matter.
Right now, the US dollar isn't just "another world currency".....it IS the world currency.
If you want something - like oil - on the world market, you have to pay for it in US dollars.
Since we here in the US have the dollars, we don't have to buy the dollars first, then buy the item we want to buy - we just buy what we want.
If Bitcoin - or any other currency - replaces the US dollar, it could prove to be a financial disaster for the common citizen.
My granddad always said, :As one door closes, another opens".
Wonderful man, terrible cabinet maker...