Thanks for the new thread, Olenna.
LeCroissant asked on the previous thread if there were any women who were facilitated by a SAHD in the same way that a lot of men are by their wives (whether SAH or not). I come close: DH works very part-time, and also does all the laundry, day to day food shopping, cooking during the week, pet care, child care (obviously, though DD is in school so that's less onerous than it was in the baby years) dealing with people doing work on the house etc, and we have a cleaner who also irons and a gardener to tame the worst of the jungle outside, as neither of us is green-fingered.
I do the bins (spot the role reversal!) and the household admin, plus pitching in with routine stuff when I'm here. And I pick up after myself. But in the week I'm not here very much: I work FT, so out of the house 50-60 hours with the commute, and also have a volunteer commitment that takes 2-3 hours a week. What I don't have is a time-consuming hobby: I try really hard to ring-fence from Friday night to Sunday night for family stuff.
This works for us, and my career has been able to fly because of it (senior public sector). But DH is significantly older than me and had built up savings and so on before we married: if we split, I would obviously pay maintenance for DD, and he could afford to stay in the house (though not to buy me out): I wouldn't want to uproot DD, and I could just about afford to start again, even in London. He wouldn't have made the choices he has if they left him financially vulnerable, I don't think.
I'm not sure what I conclude from this (except that I do feel lucky - that word again: I work slightly longer hours than I really want, but I love my job, would be terrible at staying at home and would really resent being pushed into a boring job to fit around someone else's work commitments). But although it works for our individual circumstances, I don't think it's a particularly healthy or sustainable model, and I have an uneasy sense that I've become part of the problem.