Do you think that people who offer some services here on forum and make money from it (like exchangin Bitcoin, offering lending services, web design, translations etc.) are also obliged to report that to their local authorities and pay tax?
Nope, Bitcoin was not designed by the government so that the Government can not force their citizen to pay tax on it. In fact, you do not have to pay any tax ( excluding fees for miners) in order to use bitcoin. That's why many poor countries afraid of Bitcoin. They scare that bitcoin may effect a lot on the national situation as well as the Fiat. Therefore, Bitcoin is still being banned in many countries in the world
I'd rather say that the majority of things were not designed by the government, even money itself was not their invention. Taxes are said to be intended to fund numerous public expenditures, allegedly for the common good. At least, that's what they say. But, like with the fractional reserve banking (a misnomer on its own) where banks don't actually need deposits to create debt, the government don't need taxes since it is the only entity which allowed itself to print money...
And fiat money is a tax in its own right already
I do not agree with you. Money is the Government tool which is used to control the country economy and its people. The government can easily make an impact in money without being objected. They can put a tax on Fiat, they can control money, as long as your house, your vehicle, your children and even your dog. Building and providing public expenditures is just the ways to calm down the citizen.
Could you expand in greater detail on your disagreement with my point? It is not quite clear how exactly what you say challenges it. Yes, I agree hands down that money can be used (and is used, for that matter) to control population, to a certain degree, at least. But I don't really see how this contradicts what I say and whether it has anything to do with my dog. Or are you disagreeing just for the sake of stating your disagreement?
What exactly do you disagree with?