some countries banding bitcoin , some encureging , some people say its a replacement of visual currency , some saying its just a scam ...... whats the real future of bitcoin 
Bitcoins probably won't be king anymore in 50 years. There's probably a new kid in town that's way cheaper than bitcoins, although it has somehow a similar price, and then better features compared to its great grand dad. 50 years is a lot of time to develop high tech cryptocurrencies.