Your husband isn't trying to be insensitive, he just doesn't understand how HARD it is!! He has to trust you with what you are and are not comfortable with- he cannot make those decisions for you.
I am in a similar situation. My husband is a very light drinker. We have removed all alcohol from the house, and he does not drink around me at all- whether out to dinner or at a party. He's very supportive, and it helps, but he also does not truly understand how hard it is.
I tried to explain it to him this way: "Honey, if you stopped masturbating for a month it wouldn't even be close to how difficult going without alcohol is for me". He got the point.