You've never had a craving for alcohol? In AA we talk about the phenomenon of craving. It occurs AFTER the first drink and compels us to take another and another until we end up drunk. If we don't have the first drink, the craving cannot get us drunk.
We set out to have one or two, but can never guarantee that is all we will have all the time. We might limit our consumption on some occasions, but sooner or later we lose control of how much we drink.
Does that fit with your experience? If so you may be alcoholic.