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/