Many of us dealing with cryptocurrencies like bitcoin see a future where fiat will be overrun by it. Of course since we're aware of the advantages of crypto, we're going to have the perspective of a digital monetary system in the future. But for thr majority that doesn't know btc that well, they won't see btc to be a threat yo something that they've been using ever since. We'll see in a few years but its likely that fiat and crypto will both be used