"Is there any such thing as too much of a good thing? Yes. But that doesn't stop most people and that's fine enough. Everyone has some sort of compulsive behavior that makes them feel good, but may have adverse consequences in the future.
However, when are normal things like over-spending or overeating considered being a sort of disease? – When your whole life falls apart because of it. When it gets in the way of daily functioning by interrupting or ruining things like work, school, relationships, friendships, and health.
Most people assume that the only things you can get addicted to are drugs or alcohol which are intrinsically rewarding and therefore reinforce the behavior. But there are way more addictions and many adaptations of how addiction is portrayed in cinema. Whether it is the beginning of addiction or rehabilitation from it, or even how there is a whole economy based on addicts, there's a movie of it." - tasteofcinema.com
