I would love to see a study about big families and cortisol levels.
I would also love to see a study about the benefits to children in having fathers who spend serious time with them, not just see them on weekends because they're working long hours.
It's just not as simple, for most of us, as 'FT daycare vs SAHM'. In my case, we weighed up:
SAHM and mostly-absent father (travelling a lot for work)
vs
Part-time SAHM, part-time SAHD, part-time daycare. We chose the latter partly for our own benefit (neither of us wanted the first lifestyle) and largely because we passionately believe in the benefits of having quantity time with both parents, and we could only do that with a bit of daycare thrown in, since neither of our jobs would allow us to reduce to 50% hours.
I know people who have weighed up 'SAHM/working Dad but in a place with no support system, few friends, etc' vs 'WOHP with grandparental support system'. Friends who have chosen between part-time work and living with in-laws in a small house no garden, and full-time work in a bigger house, nice garden, access to playgroups and museums and parks. Friends who have chosen between unhappy relationships (but SAHP) and single parenthood with daycare.
I have no problem with talking about the issues head-on. I don't mind knowing that when my daughter was younger, her daycare days were suboptimal, because it meant that I knew I had to compensate for that on other days, which is fine. But I wish it wasn't always so damn reductive. These are complex issues, there are HUGE variables, nobody knows which complex equation results in the 'best' care for the child.
No, better we just pretend that the choice is daycare or mummycare.