I think for bitcoin to be a real currency, government have to accept it first.
So I ask what country do you think will recognize it as a currency?
Bitcoin is indeed a real currency. There are countries who are moving in positive direction of recognizing bitcoin as currency. For that matter Japan has already recognized bitcoin as currency. [1]
Russia is also trying to get hold of bitcoin. One big problem with the bitcoin as currency acceptance is bitcoins nature of decentralized. This lack of control is something bothering govts to act against bitcoin or trade water safely.
[1]
http://www.newsbtc.com/2017/04/02/japan-officially-recognises-bitcoin-currency-starting-april-2017/ Well, it is, to my mind, already an official currency. However, I think that at the moment, most countries already have their own currencies that has been named following a long process hinged on history, laws, and other means of choosing one country's currency. Due to that, it would be difficult to shift to another currency when most already have their own. I think, it would be more probable for bitcoin to be accepted as a legal currency that can be used to pay for services and goods or used to as an investment medium, because at the moment, only a few countries have sanctioned bitcoin to be used in that way.