Oh, I have...20 years ago. I ride and race with a lot of people, hang out at a bike shop, and I just don't see it happening normally. Sometimes a noob will build a wheel and mess it up, or try to true one and cause failures of spokes, and even sometimes grossly inelegant riders will break one slamming through potholes, but I think that spoke breakage is pretty uncommon nowadays.

So yes, it happens, but *nobody* has spokes break regularly on multiple wheels on multiple bikes in the same bousehold between different riders like this without doing something wacky to cause it. No way.