Well that's one way to look at it. Humans have been drinking wine and mead since a very long time ago (for instance look at all the biblical references to wine). In modern terms we know that moderate consumption of beer or wine is beneficial to general health in many people. We also know that people who regularly drink alcohol have an increased calorie intake, but this doesn't lead to eatra weight gain. We also know that a lot of alcohol calories are burned off as heat rather than stored as fat. We also know that alcohol calories will be used preferentially to all other calories, so from a weight loss point of view you are better off drinking on an empty stomach. We also know that excess alcohol is very hard on you liver, kidneys, heart, brain, etc.....Alcohol can be addictive.
Excess alcohol drains your body of many vitamins and minerals, but in moderation can assist the uptake of many nutrients and aid digestion. Not saying yah or nay to alcohol, I just want you to know that it is a two-edged sword. At your age I suspect the urge to abuse alcohol will far outwiegh any socail or health benefits you may gain from it, but that's purely speculative.