It's hard to imagine but there are people who aren't American ;)

Btw, while the tax argument was the last thread the fiat fans were clinging to, it should be noted that this is obsolete now since there's at least one country where you can already pay tax with cryptocurrency and possibly a second one that recently introduced Bitcoin as legal tender. As well as the Próspera SEZ in Honduras. Things have been moving fast, it's highly unlikely that this trend can be stopped now, even if some countries aren't going to accept it any time soon.

Of course you have to (or, well, obviously it depends on the laws of your country, but let's be real — what country would agree that you don't?). But there's no earnings, if all your earnings are in magical Warhammer 5000 Gold™ that your government doesn't recognize as money.

(Of course, to be fair, income tax isn't the only tax you are supposed to pay, so I'm vastly oversimplifying everything here, but, again, I'm doing so because all of this isn't the point.)