I think Bitcoin will have a hard time getting approval from governments because of their reluctance to universal access and the concept of Proof Of Work. The Government is scared of losing control of cash and to be honest, it makes sense. They have enjoyed the power of being able to issue money and control inflation by doing so. If Bitcoin becomes a success, maybe it's time for them to start working with it instead of against it. Who knows, we may one day be able to pay our taxes in Bitcoin (or other alt-coins) instead of USD.