The day after, I realized that it was a very anti-climactic quitting. I'm still there while I find my replacement and then I will work for him/her part-time doing some of the stuff that I never have time for when I was in the job. So, I'm not actually leaving.
Several frustrating weeks of trying to do a very demanding full-time job in fewer than full-time hours and a weekend of soul searching and budget analysis resulted in this unexpected turn of events.
Perhaps my future holds more blogging?