please don't set yourself up as "bait" to get the alcoholic to straighten up. you are worth more than that. his problem, his disease, far exceeds anything you could say or do to make him quit. alcoholism is NOTHING like cancer, or diabetes. it is a disease that is put into FULL remission of the addict does just ONE thing......never ever drink again.
you did not abandon him. you moved out of the way, so he could deal with his own problems head on. his addiction has been around a lot longer than you have.
let's see how he's doing a year from now. by then he should have at least 365 days of consistent sobriety. that would be a good marker for how committed he is to resolving his problem.