There is still a whole lot of married procreating going on out there.
In the 19th Century the US birth rates were much higher, perhaps 7 live births, while in the 20th Century it fell to about 2. Coincidentally, people learned to use more artificial means to prevent pregnancy, culminating with the potions (drugs) that are available now. The institution of marriage within the US has fallen, and has been extended to homosexual couples since the don't want to be alone, and their primary purpose is pleasure rather than procreation, not unlike their heterosexual countrymen who hold the same view.
you keep citing individual factoids and them ramming them into your absurd thesis.