I would crunch the numbers. Here's some other things I thought of
-Are there any bonuses or a 401K matching program you would be missing out on?
-Don't forget the hidden numbers like potential tax returns from this income. A lot of people depend on that return for big purchases/repairs
-Loosing the income could maybe put you in a lower tax bracket.
-If your job offers insurance you may want to keep it as a safety net in case your DH looses his job
-I would ask for a raise. Even if they suck, a raise may make you feel a bit better. The worse they could do is say no.
I SAH because my industry is low on the work load right now. My very flexible employer has halted work until the consultants catch up. I want to keep this gig, so I am rolling with it for now.
What may help the home chore situation with your DH is to make list to put on the refrig of stuff that has to be done weekly. This helped my DH see what stuff was falling behind and he was able to crank out some tasks when I was overwhelmed.
Another option is to meal plan with your DH and have him be responsible for the dinner one night a week, even if he just picks up pizza.