Don't think I'll have time to get out and shoot today, but I frequently ask myself why I shoot particular images and even why I bother at all. I've read several blog posts over the last few weeks wondering the same thing. I thought I'd link to Kirk Tuck's ruminations on one aspect of his shooting habits that resonated with me:
Visual Science Lab: Angles and Color
I don't have any professional work that I'm practicing for, but I have days where I'm really just shooting to stay in shape for whatever unusual visual opportunity may arise later.