The danger is those three are usually done in social situations where others can "pull you back" - which is why online gambling and drinking/drugs alone can get so bad so fast.

Social media has nobody to pull you back, you just get sucked in to the whirlpool.

Social drinking and smoking can also pull you forward. What pulls you back is having something else to do (in other words a greater life to go back to), and that is why behavior problems fit in to a larger picture of a not-having-anything-to-do crisis, which is referred to in the media as a mental health crisis, a loneliness crisis, alienation of labor, or anything that involves the natural cycles regulating normal human behavior (socializing, working to make stuff, having balanced views) being interrupted.