I mean, humanity started out as a loose collection of independently-governed city states. We evolved to the current notion of larger-scale sovereign national governments. This wasn't an accident or a pathology. It delivers better outcomes. A competent single governing body like the Roddenbury Federation would be better still! What you're suggesting is a regression :(
It's a regression that has happened several times, and it'll happen several times more before we've got that pre-to-post scarcity transition to contend with. It's what happens to systems that don't regulate their parts well--they get cancer and die, and in the case of societies, their people move on and try again.
When I said that I'd prefer to live in a world with decentralized power structures, I should've said that I'd prefer it to a centralized one that's on the decline. I think we need to iterate faster on our societal structures until we find one that works for everybody, and bail earlier on things that clearly don't work. Probably, when we find it, the ideal system will involve some central authority--though held better accountable.
100 years ago, getting creative with how we structure society meant starvation and bloodshed. I see crypto as an opportunity to build a stop gap. It need not be better than whatever we build that follows it, it just needs to hold us over until we can figure out what that's going to be.
> The "we choose" of the prior clause isn't an individual choice, it's a collective choice expressed via government.
But I guess it's ok that we disagree about which modes of exchange are desirable, the world is probably big enough for both :)