But it does do something and network effects have a tremendous positive impact on that utility: cryptocurrencies provide us platforms for decentralized finance. Make of that what you will; payments, providing liquidity, lending, storing value, whatever ... These trustless systems are what give cryptocurrency some intrinsic value which increases logarithmically with the number of participants in the network. I don't think this will disappear any time soon, on the contrary. Usage will increase as the technology develops and the world becomes ever more interconnected.