FFS, every single “why not just use X?” question here is addressed on the website. The developer page even has a section headed “why didn’t you just use X?”, and links to a comprehensive survey of existing alternatives.
As for the “Google is trying to take over everything!!!” hysteria, this is completely open source, no license fees required, no centralized control of any kind. It’s just a proposal, one that makes a lot of sense, and which is supported by Google Maps.
It’s not a big deal in the first world where we all have addresses on named streets. It’s not for us.
