Seems like every day this month I've answered the same question: Why should I use Drupal instead of WordPress? And this is the answer I've come up with. They are entirely different applications, about as different as Microsoft Word is from Microsoft Excel.

WordPress is first and foremost a blogging tool, and it has become widely adopted by designers who are trying to make pretty-looking sites. There's no shortage of beautiful WordPress sites, and if what you need is a relatively simple marketing site with rich content, it's a great tool.