The entire point is that men are not asked to justify these choices, men are not asked these questions. It's always women. Highly successful women are often asked how they balance family and work, when, on the same panel, a man with more children is not asked this question (the assumption being that his kids are obviously looked after by a female partner). Women continue to be under-represented in the work-place, they continue to have lower earning professions, they continue to under-achieve in the sciences. To write this all off as - that's all fine, women must not want to be "like men" - we have begun with a false premise. Why is wanting to be "like men" for both sexes to be at par with such things? Why is wanting to be "like women" for a man to stay at home? We can only argue such a point if we have accepted that there is a core, fundamental, biological (?) reason for the male protector/provider and female carer model. Sure - it is the model on which society operates and socialises kids - from Toy Shops to books to social discourse. But let's at least recognise it. let's not fool ourselves that there are innate roles that are "like men" and "like women" and it is a race to the bottom for women to randomly want to be "like men".
Situations often seen here - "I makes loads less than DH anyway", "DH is far more trained than me", "it wouldn't make sense for our family for me to work because my wages are too low" - these situations did not randomly transpire. Each of these people were little girls and little boys at one point. They came out with a penis and a vagina, and knew nothing about anything. Then something happened along the way where it became understandable/acceptable/normal (with exceptions) for the boy to excel in numeracy and science and go into a profession with fantastic earning prospects, and it became equally OK for the baby girl to grow into a teenager opting for choices which would leave her with the lack of training/lower wage she then goes on to speak of in the 20s/30s. At which point - hey - sure it "makes sense for the family for me to stay at home - my DH was totally ok with it".
In the workplace too, leave policies are heavily geared towards keeping women at home and men away from home (14 days paid paternity leave - how shocking is that? what message is it sending to our boys and girls?). my spouse found it unbearable to be torn from baby DS. I found it unbearable to be forced to stay at home for 6 months attending baby groups. Not one person in the family was happy. Neither myself nor spouse have any enjoyable recollections at all of that period.
To not scrutinise the structures which create these conditions - both in the workplace for adults, and right from get go at home and early years for babies, to write these outcomes off as solely individual choices, to accept as random coincidences the countless accounts of "he earns more anyway, so that's what made sense for us" - is to be naïve.