I’m not sure why so many people are convinced that governments will have a negative attitude toward Bitcoin or even try to ban it. Bitcoin brings down the cost of doing business making easier,cheaper and faster. Politicians (in the UK at least) are extremely keen to support a strong “digital economy”.
The point is that bitcoin takes "money supply" role away from governments. This is a big no-no in their eyes, a lot of power to give up. Taxation also becomes harder if you have no way of tracking the money flow.