The fact is that everyone is different in all the variables: dependency/alcoholism, amount of drinking or drugging required to produce dependency/addiction, what happens when withdrawing, what kills a person who continues to use. No 2 people are the same.
You came here for a reason. You obviously think you might be an addict/alcoholic. I guess I would agree with you based on what you wrote.
Best wishes for a long and healthy life - you know what you need to do.