Why do people care about the government's attitude to bitcoin? You probably forgot the main purpose of the appearance of bitcoins? It was supposed to be an independent currency that nobody regulated and created to be used between people. Why do you need government approval? You buy bitcoins for your honestly earned money. Why do you have to pay extra taxes? People are accustomed to obey the government and this is the main reason why bitcoin cannot succeed.
I usually prefer to be law abiding and yes I'm quite aware of the several purposes for Bitcoin existing today. I understand your argument about taxation on your Bitcoin holdings and earnings, but that's an age old debate and most people are hesitant to get involved into the matter. Usually people pay taxes, even if they don't want to so that they're not haunted by the Governments actions against them. There're are laws in most countries that impose 200% - 300% of the unpaid tax amount as a penalty and probably jail term. Where I live, Bitcoin gains on trading are considered taxable as capital gains (30%) if it exceeds some value or if it doesn't then it's taxable under the normal income tax bracket (could vary from 10-20%). We're forced to sadly pay taxes to stay out of this mess, and there's no transparency on where the money goes or gets utilized.
Also, Bitcoin can succeed if it helps with international remittances, and if it's for a fee cheaper than that of money remittances services like Western Union or Money Gram. Also Bitcoin allows people to carry amounts larger without having to worry about border control (at airports for example that set limits of how much cash you can carry). This is similar to carrying a credit or a debit card.
I would usually prefer an economy like Japan where Bitcoins are are legally accepted for payments, and there's some form of promotion by the Governments who formally approve of its usage.