People use and abuse both legal and illegal drugs as self medication. They have problems (no such thing as a happy drunk) and until we work out how to help them all deal with those problems people will continue to over expose themselves to harm because from their perspective it is better than the alternative.
Alcohol is implicated in a massive number of very serious health issues. The true extent doesn't seem to get across in popular culture or media. I like to have a beer with a meal when I am dining out but you don't have to know many people die of throat cancer for you to cut back your exposure to minimal amounts. Never been one of those people who needs a drink so I guess its a bit of a luxury to be able to step back and take an objective look. The people with the most risk and exposure often can't do that. I don't know that labels help them. It might divert new users but to what?