There's one major historical outlier from the whole industrialized societies not having children trend -- the Soviet Union. Like everywhere else industrialized, the fertility rate in the 50s and 60s fell from traditional pre-industrial levels (4 - 5 per woman) down to about 2.5 (just above replacement). It then stayed there until the collapse of the USSR, at which point it plummeted well below replacement in most of the successor states, and has never recovered. (Similar story in East Germany and the rest of the Bloc.)
The USSR had many problems, but employment security and time off, a basic roof and food security for young families, was not among them; it was cheap and practical to have kids.