Sooner or later the government will fill us with taxes BTC . that is the reason there are many users do not want the government to interfere with BTC . I think fast or later rule that will happen . We'll see how the government had a role in this bitcoin tax .
The only thing bitcoin needs at the governments are they allow bitcoin and maybe bring a tax, a small one. Otherwise its better stay the way it is, no one will declare their bitcoin if they think to tax them above the profit people may take. I doubt countries can really control all bitcoiners portfolio and tax them, bitcoin is freedom currencie, if that ends bitcoin value should hit 0.
of course there is no direct tax implemented in bitcoin. this is the same with fiat. nobody cuts a piece of your money and sends it to the government. but if you sell an item then in the price is a tax included. this does not depend on the currency. if you do not do it then the state will eventually find out and you get fined or worse. the same goes for income, where you have once a year tell the government how much you earned. if they want then they can look further into it. and this is where the problems usually start.