Why are some behaviors more addictive than others?

Why are some behaviors more addictive than others?

Marc Kern (Addiction Expert, Director of Addiction Alternatives) gives expert video advice on: How is a behavioral addiction similar to a substance behavioral addiction?; What is an "addictive personality"?; What can be done about an addictive personality? and more...

The reason people get addicted to anything is because it makes them feel good. The reason why people get addicted to gambling is there's a potential for them to feel better at the end of the involvement with the gambling, at least at first. Things don't make you feel better, chances are that you won't repeat it. But the reality is, it's what happens during the first couple of involvements with the behavior. Like, again, genereally speaking, a gambler who wins big toward the beginning of their career has a greater likelihood of becoming an addict. A child or a kid who has video games as a child and he likes the sensations inside, the feelings that it brings about has a larger potential of becoming addicted to that versus me who will pick up a video game and oh well, you know it's kind of corny, I'll put it down. I don't get a positive warm feeling from playing video games right now.