Yeah. Drinking to drunkenness frequently at any age is tough on your body, and doing it when you're young is a fairly good predictor of alcoholism that will interfere with your life in all kinds of ways.
Poor grades often go hand in hand with that level of drinking, or poorer than you might have gotten if you weren't hung over most Mondays. In college, you'll probably do serious binge drinking, and your weekend will start on Thursday or even Wednesday, so you'll skip a lot of classes. Eventually you'll drop out without graduating.
The jobs you can get are the same ones the kids who didn't do college at all can get--only they've got several years of experience and you don't, so you're nobody's first choice for a new hire.
Oh, and your relationships, from family to friendship to romantic, will be strained, damaged, or ruined by your drinking.
Seriously, I'm not all gloom and doom, but you're drowning some emotional problem drinking this much since you were 11. Deal with the problem and learn how to be a social drinker who can easily stop after one. Then you could turn out just fine.
Our daughter is dumping her third alcoholic boyfriend. He's 24, has declared bankruptcy already, has a 20-hour-a-week job paying minimum wage, no job skills to speak of, and manages to find money for booze but not food. He's going noplace fast, same as her last one.