I completely understand dealing with the depression thing. I've been there a lot. It's not easy to deal with when you have certain expectations from your man.
The financial thing is a little weird. There has to be an underlying thing going on. Maybe it's just a control thing. If that's the case, it is more common than you think (especially when you are a stay at home mom). Men can say and do things that they would never say or do or expect when you were working. But, either way - DON'T DIVORCE OVER THIS! It is workable.
At least now you are able to be home for your kids. If you leave, that will change. Money, or lack of, is not the reason to divorce someone. It's not easy and can cause lots of stress and fights, but it's not a good reason to change your whole life and actually put yourself in a worse financial situation.
I highly recommend you get the book Created To Be His Help Meet by Debi Pearl at www.nogreaterjoy.ORG. Her advice can actually transform your marriage in a way that will blow your mind. Hear what she has to say at least.
You're frustrated, angry, and probably a little depressed/discouraged yourself. The problems in your marriage didn't happen overnight and it will not change overnight. You may have to deal with your husband's depression the rest of your life, I will. But, you can make this work and even find joy and happiness. You can even fall in love with him again. It's true.