It’s only been around for thousands of years. It affects more people now because their are more people on the planet, and more drugs available.
Whether it’s a sin is for God to decide, case by case.
Sin for those who know they get wicked when they’re sloshed or otherwise chemically altered. The disease story never made sense to me. Allergy maybe, or accustomization. Doing for the body what it ought to be able to do for itself, until it can’t anymore, and might need a hand to get things normal again. I wonder if it’s an insurance issue,that it takes the disease label to get recovery paid for.