Do not trash Fiat yourself when it's actually needy, crypto and Fiat must co-exists until the government decides to go digital with Fiat themselves, and Fiat is not trash.
The economy of some developing countries is cash driven. Their financial transaction is mostly through fiat because online transactions are either low or non-existing. In such countries, you need cash to buy almost everything so keeping your money in cryptocurrencies might do more harm than good. Bitcoin can be used as a hedge against inflation or an investment tool but in these countries fiat is king. Government policies also affect the use of cryptocurrencies. Crypto-friendly governments will also promote the use of cryptocurrencies. And from some indications, the Nigerian government is not friendly.
Everyone needs cash,Cash in some countries is like a pass code,and almost every person in town needs to have Cash.Its an instrument for accesibility,safety,and during insecurities,people tend to hold more cash in other to prepare for what lies ahead of the future.Cash is seen and available to everybody,thats why its often referred to as public money.
However,cash plays a very significant role in today's economy just as bitcoin does.The truth is that fait and digital currency,bitcoin,will continue to exists and operate with respect to thier co-existence,and they're both useful currencies to speak of and utilize.Although,some countries prefer fait over bitcoin,and cash has it all like in popularity,dominamce,influence e.t.c. In essence,I totally agree with this topic that cash is not trash and cash does not crash.