In my opinion, this can't become an addiction - in the worst case, it could become a habit, but not an addiction. Believe me, I am the most introverted person alive who hates going out with people and doing things, but after I stay inside for a couple of days (weeks...?) I just feel the urge to go outside and socialize a bit. Or just go outside for a walk. I hate being a couch potato (I also hate watching TV and eating snacks separately).