T0, I say this with a lot of love: you are sounding as angry and defensive as you were when you first arrived. Where's that inward-looking, GAL-ing, confident, kick ass mama who just went on with her life despite her H ' s wackiness?
Also, from someone who has been there, if your H does have depression or some other mental illness, he is incapable of fixing it on his own. One of the trademark unfortunate symptoms is an inability to seek out help. I know because it happened to me. My H would say, "you have a good life. Why are you so unhappy all the time?" Or, when I had PPD, "You're crying when I leave in the morning, and you're crying when I come home at night."
Or, when I was trying to find a therapist... I saw one whom I didn't like, and then it was months before I built up the courage to make abother phone call. The thought of sharing my story and my pain, and figuring out the logistics (between work, childcare, insurance) seemed completely impossible.