I wonder how much of health benefit is just the practice of relaxing with a drink. Stress can really eat away at you and if you find a way to relax with a glass of wine, it's a great thing for your emotional well-being. I would say the same thing about smoking marijuana too, especially if you can get decent weed. That can really help you just calm down after a long day.
In the same vein, I think everyone ought to try psychedelics at least once.
I relax by taking a 3 mile run, so I guess it really depends person-to-person what's best.
I think drinking in moderation is fine, but my opinion is a bit jaded of it due to having several blatantly drunk students come to my class.