BitCoin is revolutionary and it's no surprise that its being adopted by so many countries. They are still banned in a lot of countries which is quite sad. all governments must understand its utility and advantages. But it won't take long for the BitCoins to be a worldwide phenomena.
The reason they have banned bitcoins is because they are so scared that an actual economic evolution might take places, affecting so much of money which used to sucked out the consumers of these banks, that they wouldn't know what to do. The banking sector will be fucked and there will be loss of jobs, so they try to not involve bitcoin but they don't get it.. Lose some and win some!