I love my work, work very hard (60 hour weeks are normal) and after 4 degrees can objectively class myself as "not that stupid." I am also terribly, terribly badly paid. I can't afford a nanny for my toddler, can only afford daycare and babysitters because my husband (a teacher!) is the big earner in our household at the moment, and also does more childcare outside of the usual working day, so I can be at my desk in the office at home.
Being a lecturer at a university is long hours for little money with terrible job security (many lecturers and professors don't know from term to term if they'll be employed.... you can't live like that if you have bills to pay, children to raise, etc). I have absolutely loved, loved, loved it. And I can't make ends meet. I don't have masses of debt, I too drink tap water and bike everywhere, and the truth is, I'm changing careers to something more 'businessy' because I can't meet my obligations/responsibilities on an adjunt's pay, and the tenured professorship of yore is now something like a legend.
So: My job pays so badly I am changing careers after nearly 9 years of training and working very hard to get where I am today. 1 of my degrees is from oxbridge, 1 from an ivy league institution, I have glowing references and amazing teaching evaluations from students who cried when they couldn't get into my next class after a semester with me.
And do you know what? I really wish I could have spent more time at home with DS when he was a baby. I went back to work at 6 weeks. I had no choice: work and my visa status and my health insurance required it. I had one crying fit in the shower then got on with things, and I reckon DS has turned out about fine actually .... but it wasn't my 'sexist husband' or my 'sexist upbringing' or my lack of ambition, education, or native intelligence that made me want to spend more time with him as a baby: it was the fact that he was such fun to be around, and that time felt terribly short.
What's done is done: I love working and will always work, I expect. Not least because we can't afford not to work. But this "only stupid people want to be at home with their children all the time'' nonsense cannot go unchallenged. I didn't want to give up working forever. I would have liked more than 6 weeks, and even now, when DS wants Mummy to do bathtime and stories , but Daddy does it because Mummy has to work in her office .. even now I miss him and wish I had less work to do.
So I think that one can be intelligent, educated, ambitious and eager to pursue a career after childbirth and still want to spend some time at home with one's children, while they are very young. I don't see this intense polarity that you are positing, Xenia - it may be your experience but it hasn't been mine, and I think your reasoning is flawed when you assume that those who don't aspire to your model are inadequate in some way.