A generation of Americans has grown up out of the wreckage left by the divorce culture, and concluded that even if the traditional family is the best lifestyle choice among many, it's a "bridge too far."
Early on in the USA children were an asset to the farm. Each would do a share of the day to day work that needed done to produce food for the family and to sell for income.
Also children were employed in other family businesses as apprentices and such and thus helped the bottom line of those businesses as well.
But with the change in the work place and fewer and fewer family farms in the USA a child is no longer an asset. (I am talking purely production here not about family values and such) Back in those days having children balanced out financially and even give the family the ability to produce more exponentially with each child added.Not so nowadays.
These days, rare it is that a child adds to the family's monetary bottom line, mainly because of the way society has morphed into a situation where Mom and Dad both work just to keep even with inflation (unless you live a fairly sparse lifestyle or are lucky enough to have one adult with a very high paying job.) Bottom line children "cost" alot now and with ever higher price inflation and the devaluing of the dollar it ain't gonna get better anytime soon!