Goldbugs, because of how bitcoin is "mined" and is inherently deflationary. And gold is the one true currency, m'kay.
Cypherpunks, because it is built around cryptographics. And cryptographics makes anything double plus good.
Never mind that both kinds have a strong anti-establishment streak.
That said, if they could get away form their anti-inflation fanaticism, and find some way to speed up the ledger processing, then the distributed ledger part of bitcoin may have a future.
This because while inflation can be bad when it runs riot (though money printing in itself is rarely if ever the cause) it is better in the long run than deflation, as that allows some entity or other to corner the market.
And in the end, all currencies are tokens of account. Meaning that they exist in the end to make sure nobody double spends. But to be effective in doing so, the token material must the worth less then the face value. If not, people will have an incentive to hoard. And that will drive an economy into the ground.