Oh good, another SAHM vs working Mum thread. 
My personal view on this completely over done debate is this. Being a SAHM of children under school age is hard work. It is relentless and can be incredibly isolating and boring. If you are literally with toddlers and babies all day it is like a going out to work job in fact in many ways harder.
However. If you are a SAHM of SCHOOL age children with no additional needs who are at school full time it is not a job. Yes, of course School age kids need you- in many ways actually they need you more than babies and toddlers. But essentially you have 6 hours a day, 5 days a week with no children and no work. Before anyone starts arguing, housework, ‘admin’, errands, sorting children’s school stuff etc etc is all normal stuff that FT working parents have to do as well. It is not an extra job.
If you are a SAHM of school age children, there is nothing wrong with that at all. If you can financially do it, and it feels right for your family, it’s such a good thing to do. There to drop your kids off and pick them up, help with homework, be there at bedtime etc. It’s hugely valuable. But I get so so irritated by people who claim to be ‘so busy’ or ‘so rushed off their feet’ but have children in full time school and don’t have a job. A lot of what SAHMs choose to do are choices. You can’t compare having a FT job out of the home and juggling everything else against having 30 hours a week free time. You just can’t.
SAHMs of pre-schools- as I said- entirely different.
For full disclosure I have two School age kids and Work PT. I have two free days a week to myself and I love them. Hugely lucky and think it is the best of both worlds having done both FT work and FT SAHM.
I also think it’s worth saying again that what works for one family may not work for another and it’s also dependent on how much the other partner does around the house etc. My DH works ridiculously long hours. Usually gone by 7.00 am and not home until 11. During the week he does literally nothing in the house. Maybe takes the bins out. When I was working FT and trying to do everything in the house and working in the evenings at home AND dealing with 2 small children we nearly divorced. We could not do it. I’m very fortunate that I’ve been able to go PT. It works much better.