I was getting tired of my old theme's design and didn't feel like updating it. It's not so much a matter of not wanting to do it as not having the time or ability to design a theme from the ground up. I really like writing the code behind a theme - I've done that many times in the last couple of years - but I just don't have the graphic design skills to come up with something top-notch, like the Deco theme, which I'm using now.
Now that I'm back in school, I've been stewing over some ideas for an SOC project for 2008... but more on that later. In the meantime, enjoy the new look!