Why is alcoholism considered a disease, but smoking isn't?

Alcohol/Smoking: A disease by definition is an abnormal condition with signs & symptoms, causing distress & dysfunction & social problems & even death. Since both alcoholism & smoking fit that picture, i see no reason not to classify both as diseases, such as alcoholism & nicotine addiction.

It is: The disease name for cigarette addiction is tobaccoism or nicotine dependence.

Smoking: Both are addictions, classified as such.

Addiction: Both are considered addiction & both are classified as such.

Alcohol disease: An illness or habit that harms your system, affects your health, and causes dependency, is a disease. Both the above fit that description.