Reluctant upvote. Drupal's what I learned in high school. It gives you pretty unparalleled control over your site. Conceptually it's a league above any of its competitors: You can do some incredible things with it without knowing any coding.

It's also ugly and hostile and maintained by some of the least friendly people I've ever had to deal with on a project. There's an insane arrogance in the community.

I wish there was something just as flexible but better. As it is, the choice is between stiff and ugly.