Blockchain addresses the fundamental societal concern of trust. It addresses accountability and transparency, removes middlemen, and maybe down the road will pr

Blockchain addresses the fundamental societal concern of trust. It addresses accountability and transparency, removes middlemen, and maybe down the road will provide a currency use case. Yes, it can act as currency but that is the use case with the worst odds. When it comes to currency, your coffee is not the target right now. Getting rid of entrenched monopolistic behavior is the best first step: wire transfer fees, Western Union, transfers that take days to process, objectionable government-defined illegality, banks freezing your funds, etc.