I usually drinks alcohol but I do that in moderation and I don't think I am an alcoholic because I can stay for some days, weeks or even a few months without drinking alcohol.

That is a very healthy use of alcohol. And it is true that alcohol as a drug if consumed in a healthy dose can have health benefits. Thanks for the beautiful write up.
Did you know that even some drunkard are not alcoholic and ironically we have alcoholics that do not get drunk at all. I have tried to explain this in my entry on Alcoholism