Surely it's a different kettle of fish being a SAHM to pre-schoolers and to those at school?
I worked part-time with my DC1 and we had a whale of a time. Having a toddler and a baby is hard work for anyone, but most of us are either on maternity leave or SAHMs while a baby is under one. So those tough times are common to pretty much all mothers.
I was then an accidental SAHM for a few years. My husband works away a lot, so I was often on my own or days on end. I longed for time 'off'. And it came so quickly. Nursery two mornings a week quickly turned into pre-school then school.
Those times of longing for a coffee on my own or a chance to shop in peace quickly became the norm.
There is sod all to do between 9 and 3 when your kids are at school. I batch cooked one day a week. I did a load of laundry most days. And I swept the floor and did a quick tidy every morning. I was done by 10am.
I got a part-time job before DS2 was 5 and now work full-time hours but flexibly, so I (mostly) collect my children from school. I still have to do all the housework and child-related things that SAHMs do. I have to serve breakfast, do laundry, make evening meals and snacks, supervise homework, take to clubs, attend medical appointments and school events. I still have to sew on nametapes and badges from swimming, gym and beavers. I get the food delivered and it takes ten minutes to put away. I used to go to the supermarket for something to do ...
Just as when I was at home with pre-schoolers I rarely finish before 9pm. Sometimes it's much harder, sometimes it's less hard. It's not a competition.
But I do get fed up when SAHMs (with school age children) tell me their lot is harder. Or they wibble on about not being paid for their work at home. No, looking after your children is parenting. You don't get paid. We all have to cook and clean. My daytime's just more interesting than cleaning curtains
.