As somebody who juggles both figuratively and literally a lot of hobbies, I can definitely relate! One of my friends is a bit like you, they tend to experience the sudden flash of interest in various hobbies, dive extremely deeply and then experience a "bit flip". (a quote describing John Romero's hot/cold personality when he worked at id Software)

With respect to people with a consumptive addictive personality though - I really feel for them, it's a rough time to be alive.