I say take this as a gift.
I know that sounds weird. I know it doesn't feel like that now. But it's very likely this will only happen again. It sounds like you have a plan to get out and it sounds like a good, solid one.
I'm living through you.
Depression SUCKS!! I want out, but my husband is NOT cruel. Yours is. The things he has said to you are just awful and drinking all day is no way to solve a problem. He is being verbally abusive turning everything he thinks about himself back onto you. He's making you second guess yourself. I feel like he's trying to mold you into a 1950's wife and that isn't you. That's ok! We aren't all meant to be out of that era!
You're a wonderful, strong woman. Please do what is best for you. What is best for you will be what is best for you children.