Hmmm...
I consider 5 years to be "considerable" but have no idea why.
From my observation as an active AA member of over 20 years
some do quit again quickly....some do quit again eventually
and some never stop drinking.
From what I hear people share ...their downhill slide
begins with a mental obession...quickly restarting
physical dependancy.
I'm not giving hard facts....just saying what I hear.
When I kept returning to drinking...it was during the
first 4 years after I decided to quit. Not after
any long time sobriety.
Vigilance is the key for recovery.......