I know this won't apply to everyone - as not everyone needs to commute to work during the week. However, for those of us that do (and even those of us who travel daily doing things like taking the kids to school / shopping, etc) do we all carry a camera at all times or do we just carry one when we have something in mind to shoot?
My wife and I commute by train about 55 miles each way from where we live to Liverpool Street station in the City of London (Mon-Fri). It's a real rarity if I don't have a camera bag with me every trip. Mostly, it's an SLR and a couple of lenses (today, it's an F5, 24mm f2.8, 50mm f1.4 and 85mm f1.8 )
Now that I have one, it's increasingly likely I'll just carry a Voigtlander Perkeo.
Very often, the camera won't even leave the bag. Occasionally, however, something will catch my eye and I'd feel cheated if I didn't have a camera to record it....
Are you umbelically attached to your cameras, too?