From a certain point on we must start being adults again and become aware that some health risks are worth the price when it comes to drinking a glass or two of wine/beer every-once in a while. Because wine/beer have helped us become more of a social animal over the millennia, i.e. have helped us become humans, and suddenly reversing that for the sake of, I don't know, 6 months-a year of prolonged living in their late 70s - the 80s is not worth it.

With that said, I'm fully aware that excessive alcohol intake (i.e. alcoholism) has been destroying lives for millennia, too, but that's what life is, we can't turn it into this aseptic thing where every risk is accounted for.