There's not only the woman happily waiting in her own home and lit bathroom for two stripes. There's also the woman being in a shitty situation doing the test i

There's not only the woman happily waiting in her own home and lit bathroom for two stripes. There's also the woman being in a shitty situation doing the test in secret dreading the second stripe. I guess your wife (and mine, for that matter) belong to the first category and it's just common to do such a test at the end of the cycle. I doubt women of the second category care for getting experienced in reading the tests.