fennel
was thinking of changing my name for this one, but have decided not to.
my parents were determined not to put me and my sibs in childcare even though they both worked. in order to accomplish this, my mother worked nights and weekends (as recommended here).
without going into the details, i would say i had a pretty miserable childhood in many ways - and i think the family working arrangements were the main cause of that.
in addition, the effect on my parents' relationship was terminal - they limped on for the sake of the kids until i was 21 (brother and sister were younger).
so fennel, i completely agree - based on personal experience - with your assessment of the situation when the parents take that option.
another thing - i see on this thread a whiff of the "it's only until they go to school" philosophy. again from personal experience, wohm is much, much harder when kids reach school age. therefore, whatever arrangements you may have in place to allow sah now, or whatever aspirations you may have to change the arrangements once the kids are at school - don't assume that they will stand up against the culture clash that is school v. work life.
just my 2c.