Is it really that ridiculous that we dedicate a lot of resources to keeping track of who owns what? We're a mostly capitalist society, right? In a system where private ownership reigns supreme, you absolutely need to keep track of who owns what or we'd have even greater wealth inequality than we have now. Personally, I'd like to see some kind of anarcho-syndicalist structure but let's be honest our greatx10 grandchildren will probably still be capitalists.
This article is a little over-the-top in some spots, but the main point is correct. Cryptocurrency is an innovation in accounting: https://hackernoon.com/why-everyone-missed-the-most-importan...
Cryptocurrencies are trying to make trustless transactions a reality so we don't need a human workforce to keep it all mostly accurate. Don't get too disappointed yet, this stuff is just getting started.