What do we think of a time that may come when the fate of human survival will depend only on using cryptocurrency for buying and selling, because mankind may soon find Fiat currency is obsolete or of no value in their current environment perhaps due to world earth crisis or pandemic or war .
Your opinion is valid!
Such a time will certainly come, with the level of revolution in the crypto and blockchain technology at large and it's adaption and usage right now, it is possible for fiat to fail in the nearest future. Considering how nations and firms are buying and investing in Bitcoin right now, fiat may certainly fail one day.