I really do. At the very least WP 2.7 gives me something new to play with.
I loaded it on a new site I am working on and have not had too much time to dig in deep, but on first glance, I enjoy the wealth of info in the dashboard and that I can customize it, move it around. So far, my favorite feature is the ability to upload plugins right from inside the dashboard, rather than have to find the plugin, ftp, extract, then activate.
One of these days I really must upgrade this blog.