This also makes me proud of myself for seeing WP as a star product way back in 2005 when I was just getting started with Web marketing stuff and working on the public-facing side of Four Eyed Monsters.
There a a number of other free, open-source systems for managing website content. Drupal and Joomla are the most obvious to mention. But in my opinion, these are not mature platforms, even though they may be more appealing to devs.
The point of a CMS is (in my opinion) to make things easy for non-devs. The point is to make it easy for the owner of the site. This way, they don’t have to get ahold of their “web person” to fix a typo or add or remove a page.
Anyway, I’ve had faith in WordPress for a long time and watching it grow to the point where it is now is so comforting to me. Thank god for crowd-sourcing and Open-Source! It works.