The fact that you are asking this question should give you your answer. And I agree, if it is effecting your life in any way, then it is a problem. And on a scale of 1-10, you dont have to be at a 10 to have a problem, a 2 is a problem, enough to make changes, you dont want to work your way up to a 10!
And I would guess that if you are drinking that much, you may not be making good choices... I mean, do you stay home the whole time? Cause if you drive at all, that is a huge problem. And at 7 drinks, you will either be effected the next day or you have gained such a tolerance that it is nothing.... and either one is major problem.... even possible dependent on the alcohol in some way.
And I agree, that thinking of WHY you drink is a good idea, but you might need to stop drinking or cut down in order to get your answer....