J.S.
Hold the phone....You are equals. Equal partners.
You seem to be taking his concern about finances personally, so let's reverse roles.
He has the baby factory, and wants to be a SAHD. You work and pay all the bills, but this is the exception as you have been (and are now, unemployment counts) a two income family. He says "honey, I want another kid, with more expenses and I'd also like to stay home - or something, until i find myself. Sound good?"
You are not a child. It is time for you to step up and start considering the small business that you run (family finances). Your business has costs, and needs income to meet those costs.
You proposed increasing your costs. You also proposed decreasing your income.
I'd take a second before you send that email.
I understand wanting a new baby, and I think that's wonderful and very workable. But you're throwing a temper tantrum b/c he pointed out that it would be wiser to do some financial/income planning before taking on a new expense?
I'd give this whole thing some more thought....