I think my husband is an alcoholic, How much an I suppose to take?

I have been married for 11 years and I believe my husband is an alcoholic. He's doesnt beat on me or anything and he's a great father to our two kids. He doesnt hang in the bars or get fallen down drunk but I'm from a family of alcoholics and I know alcoholism is bad knews. Its makes me crazy to know that he would rather have a drink than have a peaceful evening with me and the kids. When I catch him drinking, It makes me so mad, I can't see straight. I don't even want to be in the same room with him much less have with him. If its not a problem for him, why does he choose the bottle over me? I want to help him and be here for him because it is a disease, but he keeps lying about his drinking. Im afraid he's gonna put our kids in danger by putting them in the car after drinking. I love him so much but what am I suppose to do and how much am I suppose to take. I keep thinking about in sickness and health. That was a vowel i took.