Am I going all in with WordPress? I guess so. Most of the site I develop for clients sites use WP, with a smaller number using ExpressionEngine. And it feels like more and more clients, including my wife, are requesting WP.
EE is much better to develop for (Drupal is even better), but WP seems to be preferred by clients. And faster to install and update, which really matters. Craft is another application to watch.