Difficult to know whether YABU or YANBU...
If he does not have a problem with alcohol, and it is a way of relaxing when there is nothing else that is on, and you don't like him drinking, just because it is not something you do much, then I'd say YABU
If you don't like him drinking because each weekend he spends money that you both would like to spend on other things, or he cannot participate / contribute to family activities and responsibilities, or drive to places you need to go to, or if his drinking stops you both from socialising or enjoying yourselves - then I'd say YADNBU
In eaither of these cases, then PotPourri's advice is good, suggest some alternative, like living, eating, drinking and exercising gently, that you can do together to generate gradual changes in your lives.
However, one of your posts suggests that you think he might have a problem with alcohol. If this is the case and if he has a serious problem, then YABU because however unreasonable he is being, you cannot actually do anything about it. You cannot control his drinking, only he can make that decision. Whole different thread.