Neither bitcoin nor paper money has any real value, but notes have national credit support, and what if bitcoin also gets national credit? The government will lose its macro-control policy but it can also effectively eliminate inflation, two relative ratios. Is that a good result? Of course, I know that the government is very unlikely to support bitcoin, but who knows?
I would rather not want bitcoin to be supported or be adopted by a certain country to be used as means for trading purposes legally ,if it happen bitcoin will need to have a stable value and be centralized like banks.
Bitcoin needs to grow independent, very few country have given legal support for the usage of cryptocurrency. No country will intend to use bitcoin leaving their own currency. Such a scenario will make the bitcoin network under the control of an authority. We can expect more countries to support bitcoin in the future.