I think bowling forums starting going down hill when equipment became such a priority. Now instead of tweaking the surface or trying a different layout (although I think modern design/engineering has made this less important - far fewer "duds" or balls that a decent amount of people don't match up with), hand releases or figuring out a better way to play the lanes it's all about grabbing a different ball. Big tournaments or longer formats will always need more ball choices to match up better, but ever since people started bringing 4-6 strike balls to the Ray Charles house shot leagues, that's pretty much all the talk. I'm lucky enough to have a sport shot league year round; if I had nothing but house shots to bowl on, I'm not sure if I'd still be bowling.
Maybe it's just time, people drifting away, or finding other interests, but this forum in particular used to have a pretty large core of regulars that pushed conversation. I'm just as guilty. I'm very much still a competitive bowler, but my audio hobby has taken up a lot of my time on line. I've learned a ton by reading posts from super knowledgeable people. I still check in here often, but it feels there's far less of an opportunity to learn near as much.