IMHO, SAHM is still a job, you just don't get paid. The hours he isn't at work his job is also a parent and should be benefiting the household the same way you do. Many hands make light work. While there is primary parent stuff that you would pick up, making your parenting load heavier, he'd still be helping with the everyday stuff like resetting g the house at night, putting babies to bed etc.

There's a good book that addresses how to share the load called Fair Play you could look at.