I carry a camera with me everywhere I go. It's gotten to the point that on the rare occasions when I don't carry a camera, people who know me comment on it. I usually wear it with the strap around my neck. Makes me look like a tourist but at my age I don't care, and it's very handy and accessible that way. I look on my camera as a form of jewelry. My current favorites are my Nikon F100 and my Kiev 4am. I also bring a Nikon N80, a Bessa R, a Canon AE1 and very occasionally my Yashica MAT 124G. All of them go one the handy strap around my neck. I have tried carrying them on the over-the-shoulder method, but I've had too many close calls when the strap slips off.
A lot of times I don't find anything much on casual strolls, but if I look carefully, I can always make a picture; they're not award winners, certainly, but acceptable pictures, for me.
I suppose it's a mild form of lunacy, but then, we all have our lunacies, and carrying a camera everywhere I go is mine.
With best regards,
Pfreddee(Stephen)