not sure if you’re a troll, but that’s the reason why you trust it. you can actually verify every transaction that happened on the chain.

the way this is done is not unlike any system that uses event sourcing (including the distributed databases that you worship).

here is a killer use case for blockchain: supply chain management with a lot of entities and lack of trust. smart contracts are a thing.

also, there are blockchain implementation that are really performant (don’t get stuck on bitcoin)