Those who don't see any use for pre-processors such as Sass often use the "bad code" argumentation. It creates too specific selectors due to nesting, huge sprites and they hate the way Sass enforces an architectural approach that doesn't work. And it's all true. If you're a poor developer. You know, one who would handcraft too specific selectors, 15MB sprites and doesn't know how to cleanly structure a project.
WordPress is a great tool for building a fully customizable blog. Now you can make it even better by adding Sass and Compass support using this simple plugin.