I absolutely agree with Dittany here. Housework, daily cooking, and care of pre-school children are all pretty boring tasks, some more than others, and none of them are valued by our society at all. You OP are contributing to your family's income and assets by the work you do in your house. You should remind your H of this when he treats you with no respect (which he quite likely does because your work is unpaid and unvalued, though in fact just as important to the well-being, existence even, of his family as his paid work is).
I'm also shocked at the 'low IQ' judgment. My cleaner has a computer science degree. She's a pretty lousy cleaner, but I suspect that is much more to do with the fact that she's aghast at having ended up cleaning my loo for a living.
I have been a SAHM for 9 months, and DH pays said cleaner to do just about every single thing that needs doing except cooking (and that's only because she's a really bad cook). This is because I refuse to be an unpaid domestic to my husband and children. DH does not want me to be a domestic. I have used the free time to read a lot, spend much more time with my (school-age) children, train the dog, see friends, and suchlike pursuits that I would rather do than cleaning. (And, I own up, quite a lot of time looking for a new job!) Obviously if we had less money I would have had to do more housework in these months, but not because of any sense of moral obligation.
I cook, but if I don't feel like it then we get take away or go out to eat. Again no sense of moral obligation to produce dinner because I don't have a penis.
Domestic work can easily take much longer than the hours spent in a paid job. I spend 1hr in the morning getting the kids and breakfast etc, plus 45 minutes taking them to school. At least an hour a day walking the dog. I leave at 3 to get the kids, then am looking after them/ supervising homework, taking them to do some activity/ feeding/bathing/reading whatever until 8pm. Plus another 30mins after than making dinner. That's already nearly 8 hours, and I haven't included a single bit of housework/laundry/supermarket shopping/bill paying and general admin.
OP if you want to feel on surer ground, add up an honest total of the exact number of hours you spend in a week doing things for the family, including all housework, cooking, laundry, childcare and running of errands for the house.