My mothers family is like that .. my mom had seven kids
She told me once that her mother told her about the rhythm method .. and with a straight face she said her mother was wrong and that doesn't work
I said .. Mom, it does if you actually try it ..
Then she blushed and said .. ohhhhh .. LOL
Sometime I so wish I lived a long time ago, and other time I'm glad I live now. It's similar to wanting to be 21 with the knowledge of a 40 year old.... Our parents did the best they could with the advice given at the time. Our kids will think the same about us when they have kids.