That’s nice when you and your counterparty are part of the same democracy, or potentially allied ones. But how do you enforce contracts when your government and their government are at war?
(The governments say “you shouldn’t; they’re the enemy.” Well, screw the governments, I want to make positive-sum trades in the hopes of increasing global GDP and ratcheting us up out of the need for wars over unevenly-distributed scarce resources in the first place.)
All the speculative value of cryptocurrencies is based on their utility in making and fulfilling the terms of contracts, when a government or governments don’t want to — or fundamentally aren’t able to — grant that contract any legal enforceability.
And much of the rest of the value derives from the ability of Proof-of-Work mining to be used to convert local export-controlled assets into exportable digital assets. (The whole reason PoW has stuck around as long as it has is that capital flight in China still needs it for a few years yet.)