I'm reminded of the old comment/joke from William Shatner to Trekkers to "get a life." I always thought those fans did have interesting and engaged lives, but the rap against online pastimes seems to be that certain hobbies or activities are somehow more worthwhile than others. To me, participating in discussion boards or other social media are just as valid recreational activities as softball, bridge clubs or model railroading.
Warren, I'm not sure if you consider me one of the people who posts a lot, but I do check here once or twice a day to see what's up. I have physical limitations due to cerebral palsy, if that makes you feel better about me not being in a bowling league or whatever.