I view cryptocurrencies as almost an open source alternative to the banking system. The fact that it even exists, and you can now transfer wealth across the planet without needing a bank/gov't intermediary to approve the transfer is huge, and can serve as a check on abuse of state power.

However the truth is the primary people interested in this will be people seeking to do illegal activity. The ecosystem is for criminals, organizations needing to pay ransoms, and speculators and that will never change.