ether, Ethereum's native token, is required to pay for computation on a computer with peculiar properties (publicly visible, unmodifiable, unstoppable code, uncensorable interaction). If somebody finds that useful, he will need ethers, and you will be able to sell them yours. How would he be a (greater) fool?
I can purchase food and shelter directly with fiat. (There may be some areas where crypto can do that too, but it’s far from the norm)
That’s not a merchant “buying” my money with other representations of wealth, that’s me purchasing food and shelter. Framing it like that is a bad faith argument.
And yeah, I’d say stocks without dividends is also a greater fool’s game.
You need an offramp.
The only offramp is someone else (or some exchange) buying your crypto.
They would be the “greater fool” in this case.
Even if you earn crypto, that crypto came from a “lesser fool.”
You’re just the intermediary.