Aside from a few sips of beer I have only drunk alcohol once in my life, 49 years ago. I was 17. It tasted like gasoline, my friends were acting like idiots, I had no desire to repeat the experience and never did.
There is no alcoholism in my family; we don't have the gene and nobody has married into it. I never cared about it, until a few years ago a friend of 15 years came to visit. We hadn't seen each other in ten years and in that time he had adoubled his weight and become an alcoholic.
The personality changes were horrifying.
He was nasty, irritable, completely different. At 2AM he burst into our bedroom yelling about some pastry.
Since then I have identified two alcoholics at the school where I teach. Same traits; self-elevating anger, irrationality, And it's just stunning how many lives have been ruined by drinking.