Well I am an alcoholic, my first years of drinking were social drinking, of course I drank more then anyone else and when every one was finished drinking if I had not had enough I would go home and finish what I had started.
Do normal drinkers go home and drink more alone after everyone else has left?
The last 5 years of my drinking I spent hiding in my garage drinking alone for a lot of reasons, I did not want to listen to my wife and kids gripe about me drinking all the time, I did not want anyone to know how much I really drank, I drank alone because other people thought I was odd because of how much and how often I drank, I drank alone to where no one would interfere with my drinking. When I drank alone it was all about me and the booze.
My life revolved around drinking and people did not factor into my drinking equations.
I know my wife who is not an alcoholic and my first wife who is not an alcoholic never drank alone...... never!!!!
I know non-alcoholics read these threads, perhaps they could chime in as to whether they ever drink alone.