I'm with infinity on this one. Respect your vows! He is.

Get your husband some help. The BEST scenario for your daughter is for her two parents to live happily together. Don't you forget that. Your husband needs help. That's the problem. Now fix it.

And mistake#2, that comment was entirely uncalled for. Infinity is allowed his opinion, just like everyone else. Many men consider suicide during divorce. I know that that thought and many other really bad ones ran through my head...