The majority of Drupal users I know couldn't write a line of C++ to save their lives. Many of them can't write a line of PHP, either. I'm constantly impressed with the patience of these people, but they get results.

In a world where every church, school, and small business could afford its own personal Rasmus Lerdorf, we'd all have much more efficient code that was lovingly hand-optimized for our specific applications. In the real world, hardware grows on trees, while Rasmus Lerdorf probably costs something like $400 per hour.