As for my knowledge is concerned i will suggest that the future belongs to bitcoins because each day more people are getting interest in investing in bitcoins which in returns give them handsome amount as it is the only decentralized crypto so the world is trending towards it which seems like in near future the world will changed their digital transaction into bitcoins.
People are using in Bitcoin because they consider it as a way to earn ample amount of profit I don't think it is of some digital currency that can be used for micro payments. This way the truth of Bitcoin being lost. But the good thing is the number of investors is increasing rapidly. And maybe these people will use their Bitcoin in daily purchases when they will live in a cashless society.