Well...
I rarely drank by myself...only when getting ready to go out
or eventually for stopping the A.M. shakes.
2 drinks did the job.
I ..never hid bottles as I lived alone.
No one questioned my consumption or fussed at me.
I had a job...an apartment...friends and money.
I still looked healthy and had no DUI's or arrests.
My family are non drinkers.
So... why am I an alcoholic?
Regardless of the external factors
Because my brain and liver enzymes quit
processing alcohol correctly. 
....Welcome to SR!