There is a difference between people (usually women) who have the choice to work and women who don't. Women who have not developed marketable skills will generally not have any choices about whether or not to work. They'll just do minimum wage roles part-time when they have available (free) childcare. It's a response to economic realities. It seems to me that the OP is addressing this group of women.
The work that carers of disabled children is incredibly valuable and necessary and caring. It's wonderful and marvellous and should be applauded not derided. But essentially this is not the position of mainstream or typical sahps.
I'm more interested in the situation of women with real choices - born out of years of dedication to developing marketable skills. What happens to them should they stay at home?
Because what I have seen from my own circle of friends/wives of friends/former colleagues/wives of colleagues is not good. Either they get frustrated and quite bitter, or they just get a bit, well, mushy. Women with originally razor sharp minds too. Learning 15 languages doesn't seem to me to be a typical scenario.
It's been interesting to read what sahms to with the days while the children are at school, but tbh it hasn't involved the study of Anglo Saxon or any life of the mind. It's mainly revolved around chores - an endless round of school runs/pump/laundry/housework/answering someone else's post. And mucking out. All those tasks are necessary - I do them myself (apart from the mucking out, being horseless) - but in and around a working day.
It seems to me that if we content ourselves with opting out into a life based around routine chores, and settle for this, then this goes some way to explaining why women are paid so much less. We expect less and we settle for less.
Oh and just to justify our own positions, we start ridiculous threads suggesting that to work is somehow "mad".
I'm a mentor for women in my firm to help them develop into senior roles. Reading threads like this makes me want to chew the desk with frustration.