As someone who drank heavily for ten years, I can confirm that this person didn't miss out on anything, except feeling like crap all the time, and money that disappears.
FWIW, I've had my deepest conversations in late evenings after a gig with a glass of white wine in my hand from which I sipped for like an hour. (I'm a musician.) My life would be fundamentally different without a single sip or even entering a bar, and I would really miss something.
If you're feeling like crap all the time and waking up with your money gone, perhaps the problem lay within the drinker, not the drink.
But I think you’re mistaken to claim that everyone who enjoys great wine, or whiskey, or beer, is getting nothing from it.