It's charming, and cute....but fortunately it's passé.

As a demographer/population biologist I know why this occurred.

Every species are compelled to over-produce.

What we were slow to realize is that we have improved "death-control" decades before "birth control" - consequently all our little ones (in prior generations) were kept alive.

Consequently;

3 generations of having 5 kids that make it to fecundity (the age of reproduction) thanks to modern medicine allowed - if they marry and each have 5 chidren - 5 x 5 or 25 to be reproduced.

And those 25 that made it to fecundity gave us 5 x 25

or 125 fecund adults in 3 generations.

In the pre-health/sanitation/medicine past 5 kids (and often more) led to 1 fecund adult...who had 5 (or more) kids, 1 of whom led to a fecund adult...who had 5 kids who led to 1 fecund adult.

Or 1 fecund adult in 3 generations. (or in the case of Ms Fecund, in the image; 16 future baby makers).

So you can say that our growth is because of the success of "death control" - or public health, and medicine.

It's now the obligation of public health, world medicine researchers, and wise leaders to make "birth control" that's safe and effective for both sexes...not just women.

Otherwise we're doomed.