Alcoholism is defined by the consequences. If there are severe repercussions from your beer drinking, yet you still do it, you are an alcoholic. This could be anything from not showing up to work frequently due to hangovers, to spending all your money on beer, to getting fat or destroying your liver. In other words, you need to have your priorities straight. That said, if you (and friends/family) can stay happy and healthy drinking a sixer of lagunitas IPA for breakfast every morning, you are not an alcoholic. I guess my point is that you can't easily tell whether someone is an alcoholic or not just by looking at their beer consumption.