My A exBF used to say his mother was an alcoholic who never drank. I didn't see the tendencies in his mother... so I consider the source of that bit of "wisdom!" My ex definitely falls under the Narcissistic Personality Disorder criteria, and I've read somewhere that 50% of NPD's abuse substances. Is it helpful to label people? Sometimes. Like someone else said, everyone is an individual, and you don't know how your AH will be until he gets sober. Some behaviors will remit, others will persist. Best of luck to you.