Not Aware of Drinking Habits

I still think that there are raging alcoholics out there who have become so delusional that they no longer are aware of their own drinking--as in, they no longer make a choice about drinking, but do it out of some extreme habitual routine, so that, if asked, they might not even point out their own drinking, despite (and disproportionate to) the amount of time drinking occupies their life.  Subtler variations of this, of which I'm mostly worried about at this point, follow on down the line, too.