The reason why I almost never wear my wedding ring - certainly not when I'm working . . . S.L.
I just spent last week in Houston doing BOISET (Basic Offshore Safety Induction and Emergency Training) to include HUET (Helicopter Underwater Escape Training). During the first iteration in the simulator my left shoulder strap did not release - trapped upside down, underwater, in a helo mock-up - I had to keep my head straight while I worked my way thru the problem . . .
. . . I popped the window out and rotated my body to slither out of the strap. After I surfaced and reported for equipment inspection prior to the next go round, the instructor checking me out noticed I'd skinned my finger - a pretty good gouge on my left ring finger, significantly enough.
My Dad started out as a machinist apprentice in the shipyards of Williamston, Victoria during World War II. He told me he never wore rings, because of his work around machinery. As a paratrooper, I have seen two instances where fellow troopers lost their ring fingers - once from getting a wedding ring hooked on something near the door of the aircraft on exit, and once from jumping out the back of a 5-ton truck. The injuries look exactly like THIS:
If I'd been wearing my wedding ring the damage would have been a LOT worse, and if it had been an actual helicopter crash I'd have either lost my finger, or I'd have died.