I look forward to the day when that turns into reality. Bitcoin being international currency would really connect nations and people and make things ever so convenient.
I don't see it happening anytime soon though, the governments wouldn't give up their monopoly over currency in their own nations.
So even though it's desirable it's highly improbable to happen anytime soon, a decade or so in the future maybe.
The state is still afraid of Bitcoin.
If the Bitcoin, or other cryptocurrency, will be widely adopted around the world as the primary means of payment, the entire banking system may lose its relevance.
So while the government decides what to do with it, how to adjust, etc.