Lord save us from the idiot who respond "But I do study demographics. Nearly all research indicates that ..."
Even the most cursory look at the baby boom will show you two things;
1. It was post WWII. Married couples having families.
2. Pre marital sex was strongly discouraged, societally and culturally as well as religiously, and out of wedlock births were very very low in relation to births to married couples.
Spare us the pseudo intellectual arguments Junior. We were there.