Being a Crypto currency lover for a long time . I loved one thing people believing on solution or Solution for the problem using crypto currency . Not only believing even they were investing . But i found lots of solution were just fake promises . Lots were submitted big white paper with lots of hopes only with the intention of raising funds . Do you find any currency really solve the problem??
Not the crypto currency solves a problem, the blockchain does.
The problem of trust.
You can also have a blockchain without a crypto currency but then the financial incentive to keep it alive is gone. Therefore this only makes sense in the form of a 'private blockchain' where trust is already given.