So someone who acknowledges that their taxes pay for roads, schools, the fire and police departments, hospitals, just to name several, and hence feels that freeloading by avoiding taxes is a dick move, is "brainwashed" or "stupid".

And as for the "you don't have to" argument because governments don't know what bitcoin is yet - it's a thing you got at price X, and you sold at price Y.  So at a minimum, if you convert your profits (Y-X) to fiat you have some kind of tax bill.  The other side - spending bitcoins bought (or mined) at X for something at Y (Y > X) - is something that governments will have to decide how to classify, but don't think that just because they haven't issued a ruling yet means your profits are free.

Try this on for size - if you don't pay you fair share of taxes then you are a freeloader, and I hope your house burns down, or you die in the street after being hit by a car, or some other fate that is deserving of someone who's willing to take the benefits of living in a society but isn't willing to contribute to the financial upkeep thereof.

If you don't want to pay taxes, move to a country that has no (or minimal) taxes.  There are plenty around.