No buddy, fiat money is still very important to our lives, it is necessary and inseparable. It's true.
Crypto needs more time to completely replace fiat money, crypto has many limitations as many shops, restaurants, and many services are not willing to accept it. Volatility, transaction fees, transaction processing times will make it difficult for us in daily transactions.
Cryptocurrency will never be able to replace the national currency of states. The system of social structure and the financial system were formed over many millennia. Nothing can replace her yet. In addition, the financial system is under the reliable protection of states. To replace fiat with cryptocurrency, you must first destroy their root cause - the state. But no one has yet succeeded, and it is unlikely that anyone will succeed. Therefore, smart people say that the cryptocurrency was created only as an alternative to the current payment system, but not a replacement for it.
Some people may try to abandon fiat, but they will still need it at least to determine the value of the cryptocurrency, which is measured in fiat. Do you want to completely eliminate fiat from your life? Then just try to measure the value of your cryptocurrency not in fiat, but in something else. For example, in horses or acres of land, as it was before fiat.