My

:
IMO, the 49% who said yes means really: "I am overstressed by the fact that I HAVE to work full time, and the woman often has an option", or simply "I am overstressed by work" (and they don't know what they'd be getting into, as it accurately was said).
Societal support for stay at home dads is key. In my society there is none: "Stay-at-home dad = unemployed bum". There's one in my daughter's class and several moms say he's a drunkard, which he isn't.
My social reality is also different from Europe's.
Nimh wrote: "What about just 50/50? All the trends are pointing into more part-time work (here, at least - I mean, in Western Europe)".
Well, that can happen when wages can let you do that. Not here, except for exceptional circumpstances (I was lucky to enjoy them for a couple of years when my boys were very young).