I think the interesting use is more in the blockchain than the currency. Public, verifiable, tied to an identity, decentralized statements that can be used as public records or provide an audit trail. Cryptographically & blockchain secured bodycams is an example that I've been looking into recently
The problem is that the distributed consensus in a blockchain is only possible if that blockchain is also used as a currency. If you remove the currency aspect, it's no better than a Git repository, which also has a merkle tree ( but no way to say which repo is the canonical one).
