You know that idea is still happening now why because as a crypto user we cant chnage the fact that we are also engage in any transaction happening in the market of cryptocurrency so in that way we are using it also as our currency though we can't consider it as  we are using it as our primary currency...  But we've using it also so it is not possible that soon we will use it as our everyday money....  And also we are hoping that other people would recognize it already....