mazie.....for someone who wants to drink...there is always an excuse. If it isn't one thing, it would be another.
Alcoholics drink because they are alcoholics. That is what they do. And they HAVE to have something to blame it on (they can't blame themselves!)....otherwise they would have to face themselves. So much easier to blame you.
Having said that....it is useless to even argue with him about. You will never "win" that argument.
A question.....is it really true that the only place and time he ever drinks anything is on his way to work?