Isn't addiction to the internet better than being addicted to substances such as drugs, alcohol or smoking?

The good race, eh? No addiction is good, nor is it appropriate to compare. Gaming addiction can lead to financial ruin, interpersonal catastrophe, loss of work, poor hygiene, felonious behavior, and the consequent social ills so associated. As can any addictive behavior. This sounds like a rationalization. If you have or suspect you have an addiction, it's best to seek medical help. See your doctor.
Addiction= disease. Since addiction is disease and not a moral issue, is high blood pressure "better" than diabetes?