I would like to know if cryptocurrency will replace fiat money in the future, also if so how long it will likely take. Also, I would like to know which coin you think would take over if one will. (E.G. Dogecoin, BTG, LTC, XMR)
I think it's very unlikely that digital money can eliminate the existence of FIAT money. Whatever the duration of time, FIAT money will be a legitimate payment tool in many countries, but if only part of the payment tool it is possible and the most potential coin to do so is bitcoin or ethereum