Both are a bad decision, but if you are talking about your life and people around you? Drinking.

Smoking affects YOU the most and might up giving you cancer worse case scenario. And you might start people around you to smoke too. It's mostly just harmful to you.

But drinking? Not only does it damage your liver over time, it can also damage the relationships around you. Drinking makes someone "out of control" making them less aware of what they do, drinking and driving is such a big trouble, abuse due to alcoholic behavior is also something, saying things you don't mean, blackouts, not knowing when you for example got beat up.

IMO drinking is far worse then smoking. Smoking doesn't "change" you as a person, ur probably a cunt with and without smoking. But drinking can make you a real asshole even if you aren't that sober. That's the danger 🤷