Doomsdayers of crypto don't understand crypto. Crypto is not really that much different than fiat currencies and even metal-backed currencies. The obvious difference is crypto is digital and fiat currencies are mixed between digital and physical, although many cryptocurrencies do allow for paper wallets which blurs the lines of the difference even more. The main difference is that the limits to the currency is hard-coded and if you were to change the overall supply you would have to get the acceptance from the general community instead of some centralized bureaucracy administered or overseen by a government.

Crypto is just a medium of exchange like dollars or bat guano. lol Crypto should be used to obtain property and depending on the crypto it can be used as a viable currency.