Addiction is their problem. Addiction, not chemical dependence; addiction, not mental illness (although they certainly may suffer from both of these as well.)* Addiction, and not even lack of willpower; an insidious, misunderstood, mysterious syndrome called addiction. Addicts may be addicted to a substance or to a behavior. Their drug may come in a bottle, a syringe, over the Internet, or in many other forms. Nevertheless, what all addicts have in common is the incomprehensibility of their seemingly willful descent into oblivion.