Flame me if you want, but here's an example. Women are acculturated to believe that there are other things to do than raise children.
Case in point: I was on a merit badge bike ride with my 13-year old son. We live in San Diego county and bike riding is really popular out here because of the weather. We saw countless young women out riding also, dressed to the nines in the gear that these racers wear, pumping away at great speed.
I will wager you that all of these women were taught at their high schools and colleges that their fulfillment in the their 20s and 30s is health, exercise, accomplishing something for themselves ... anything but becoming a mother. I will also wager that all of these relatively young women have no children.
I have long believed that the culture -- and education -- is as much as fault as birth control.
And, for the record, Mrs Tom H and I have three children between 8 and 15. Would've had more if we started sooner.
You're only talking about white females. Obviously, Hispanic women do not have the same attitude.
Same sex marriage contributes to low birth rates too. Don’t they have that up there?
I've seen a little booklet that Planned Parenthood put out decades ago = donated to the schools - that had an exercise for young girls to list the things they'd like to be/do when they grew up. It admonished them that getting married and being a mother didn't count.