An old Sgt. of mine made it a point to tell me always leave the gun hand free, back around 91 when I was 40. It's been 30+ years now I've mostly followed that advice.When out and about (shopping, eating, whatever) I seem to do everything left handed. I’m pretty sure that, many years ago, I wanted to keep my “gun hand” free when out as much as possible, and made a conscious decision to do so. But I’ve been doing it for so long without thinking about it that it’s funny when I do notice it.