The problem is that there is nothing that blockchain does that is particularly interesting.I agree with you on the technological side. And the example you wrote are all technological use of crypto and especially the blockchain mechanism.
But unregulated crypto currency is the absolute biggest ponzi scheme ever existed. It's selling sand in the desert. If you are in it just an advice... Do not be the last fool.
No one has shown a convincing use case that isn't better served by a different technology.
(Outside of trying to avoid regulation or taxes or so on.)