yup - dont forget that you are at home looking after the children and running the household in a way that enables him to work the odd hours that he does.
I would say that I would be quite happy to go back to work full time, but then he would need to step up to all the things you are currently doing - take an equal role in parenting - that means school runs, meal planning and packing school lunches, paying for childcare, doing homework and after school clubs pick ups, bathtimes and friends parties, as well as remembering to buy presents. Plus splitting the inevitable time off needed for kids medical/dental appointments and sick days, and using his annual leave to help cover school holidays, as would you.
Then with the house, he should be doing an equal amount of laundry, cleaning, cooking, ironing, shopping, gardening, DIY, meal planning, organising holidays, organising the childcare/clothes shopping, making sure all relatives birthdays are remembered and presents bought.
Thats just off the top of my head.
If he is willing to take an EQUAL role in all that then I think you can take a think about working ft and getting some independence back, because i dont know where these tossers get off thinking they can take advantage of women's free labour but allocate it zero worth.
But I bet he wont want to do that.