Not totally to be gone in the future. But the production and consumption of fiat or real money will just be lessen. But I do think that even if cryptocurrencies are making its way to stand and make real money left behind, I still do think that people are still dependable on fiat or real money because they are still exchanging or cashing out their bitcoin holdings into fiat through banks who offers services of accommodating Bitcoin exchanges. Maybe cryptocurrencies will just replace fiat in terms of fiat, but on over all basis, I bet fiat is still more reliable than cryptocurrencies.