Fact of Life:
a. All tights in the house always have holes in them at the same time. Sometimes even in each foot.
b. A kind of tights-life-cycle loop develops, which is not easy to break: As one has to go out and buy a whole set of new ones in one go, these also will all wear out at about the same time, in which case one has to go out and buy a whole new set at once. These, eventually, will of course all wear out ...
I'm sure you get the picture...any tights-loops in your house as well?