BTC have only banking systems not still have properly very much available still. For available everywhere need a lot of marketing and take time for properly as usual. I have very much hope and trust on BTC Whole administration and technology team whom great works today BTC is very well stabilise everywhere maximum position in the business and economical systems. Its very much possible and very much quick to whole world's will be biggest and valuable BTC currency will use.
There will be no currency as BTC if government never support bitcoin although bitcoin is in a stable and all of the technology support it, there will be nothing if no one support it. And what I scare if bitcoin is stable enough and caught the attention of government, they will take action what to do with bitcoin, we never know what will happen in the future
Are you talking about Bitcoin as a national currency? I agree that is very unlikely to happen.
But I think that along with many other things, anything can succeed without government support. All online piracy continues without government support. All drug trafficking around the world also continues against government policy. To legitimize Bitcoin and have it as a payment option for all purchases and taxes is another story, but people are still free to use it as long as there are people willing to accept it.