I think it is less a problem of people not posting and more of a problem with certain people being unbelievable assholes. Seriously, complete and total assholes. Because of the assholism, a few of us have just moved on, including myself and my brother, who was pretty badly treated every single time he posted here. So, I guess the only people still actively posting are complete assholes who enjoy other assholes being assholes. Not mentioning any names (umm, everyone?) but it is basically true. I barely bother to check in here anymore, I never engage in any serious debate anymore and I sincerely believe the assholishness hurts the quality, if not quantity, of posters.
But most of you seem pretty happy to keep going the way you are.