I am 14 months into kid #1. I've observed friends and family who are well into kid #2. My thought process was that going from 1 to 2 was going to follow some sort of logarithmic increase in complexity - but I am now convinced that the change is exponential. With 1, you can split the work. With 2, the dad will probably be focused on the older kid and the mom on the younger kid. Thus, there is less help to go around. M…
A colleague of mine has 7 kids. Both she and her husband work full time with white-collar jobs. If she hadn't gotten raises and promotions they likely couldn't afford the childcare costs and she would be a stay at home parent. (Cultural norm for her).
I can't imagine how this would work in a blue-collar setting where work has to be done on-site. Between sick kids who can't go to school/childcare, doctor vists, dentist appointments, parent teach conferences, flexible work hours to come in late/leave early are normal things parents need to do and even more so when you start talking 3 or more kids.
The loopback can happen, but it doesn't really manifest until much later. Spreading them out 2-3 years seems like the best way to scale to large families as that first two years really are all parenting unless you have teenagers in the house.
(Also don't get me started on current employment laws as it relates to pregnancy and how being a mom can impact both wage and career opportunities)