This may sound strange but in my case I feel that my depression was God tapping me on my shoulder. Had to get my attention somehow. It's not much of a secret that an illness can cause us to become more spiritual. We of the more "sensitive kind" are deeply spiritual by nature....perhaps we just don't realize this until a life crisis guides our conciousness in God's direction.
I know this is hard to deal ...and I know how you feel right now. Every second hurts badly. However....just the fact that you are now seeking God's intervention in this is a positive step toward your spiritual healing. I don't think God will take depression away from mankind....but God will help you if you have faith that he will now lead you in a new direction.
Take care and ...pray deeply and often...
m.b.