From the info I have, there are handful of countries that think about Bitcoin an illegal forex. Additionally, it would not make a lot big difference if a more substantial quantity of nations around the world came to declare the forex as unlawful, because Bitcoin was developed to perform exterior the realm of governments, banking institutions or any other centralized establishments.
The info you have is not totally correct as there are just few countries that have declared bitcoin as illegal, few have adopted it, while most are yet to state their opinion but that does not make it illegal. You can make use of this for reference
https://en.wikipedia.org/wiki/Legality_of_bitcoin_by_country_or_territoryIt is a good thing that bitcoin is disrupting the financial system and that is what makes it valuable and government won't just have a choice than to eventually join the train.