Once you acquire some BTC or other crypto, you become your own 'bank'
Loose your keys and the assets are no longer accessible.
Perhaps due to a computer crash or perhaps a virus.
So a central method to re-acquire your assets sounds great, except unless someone else has your keys that is not possible.
So who if anyone do you trust with your millions?
This article moves away from the concept of 'money' but the same principle applies to physical assets eg Land ownership.
For the crypto world to advance, we need devs to solve the problem of 'data' recovery.
https://www.coindesk.com/the-false-promise-blockchains-will-revolutionize-real-world-assets