Obama once said this about Bitcoin..... "its like having a Swiss bank account in your pocket"....he is correct. Since Banks are already in bed with many governments, Banks will never allow for a government to embrace Bitcoin.
That actually makes sense. Bitcoins can be compared to Swiss banks as the similarities between both of them has some kind of match. Peoples store then excess funds in Swiss bank and so is been followed with bitcoins. As long as I know, there is not limit and restrictions to use our money in the Swiss bank which is followed by bitcoins. governments from each country might be knowing the benefits behind bitcoins but they are much wise and they would never let decentralized system ruin their centralized payment system. Surveys state that if bitcoins are legalized, they would minimize upto 60% of the fiat currency trades which would not at all be profitable for the governments.