This is the future I see, a million problems solved and a million applications created by cryptocurrencies and blockchain technology. But one with a single major use case: The cryptocurrency Pawn model. A world where selling cryptocurrency would be a last resort, like selling grandma's gold watch.
People who have money will spend it and who doesn't have can't send it unless they sell something. Bitcoin is just a money which has its own intrinsic value but we can't compare the bitcoin with Gold since we never asked why fiat money does have value when it is just made of paper and no real case other than being a medium of exchange. Bitcoin is a peer to peer medium of exchange which eliminates the need of banks while making transactions.
Well, what we have today is kind of adoption which is for investment purpose but it may lead to the adoption of being used as currency when everyone have the bitcoin just like having fiat money nowadays.