If the local county records get broken into and every property deed gets stolen, the theif doesn't have ownership of every property in the county. Anything that represents physical ownership of an item is way more secure with a physical paper trial than a digital one. I understand that cryptocurrencies are different than cryptography, but a physical copy of a record i own and an official copy that a relevant party owns, such as a local government, hospital, or bank will always be more secure than digital tokens of ownership.