“It essentially offers a decentralized ledger of all transactions across a network: When a transaction occurs, everyone on the network knows about it. It’s tamper-proof and virtually instantaneous. This has real disruptive implications for the financial industry, which today uses other processes to keep records for asset transfers and more.”
I just ripped that from here
https://www.pwc.com/us/en/financial-services/research-institute/blockchain.html
But the ability to follow all details of a product through from the earliest part of the supply chain right through to sale will be very helpful for numerous reasons.
Why would most people find that desirable?
I can't see why having a transparent ledger is going to be something any private individual is going to want.