I think everyone has his own personal tipping point when GolfClubAtlas begins to seem repetitive, unconstructive and/or uninteresting. That can be the case because you become frustrated with the discussions and wish they moved in a different direction in terms of tone or content, or equally it can be because you run out of interesting things to say (and probably become more likely to contribute to OT threads, simply because you *can* contribute to them). For these people, the most honest answer to the question Tom asks should really be, "It's not you, it's me."
Thankfully, there are always new posters who are nowhere near that tipping point, and there are always regular posters (like yourself, Tom) whose tipping points aren't like to ever be discovered, so interested are they in the subject matter. For these contributors, GolfClubAtlas will remain an exciting place for quite some time. In that sense, I would echo those posters to this thread who have talked about the natural evolution of the site - people come, people go, people get reenergized about GCA, people "get a life" or don't have the time or interest they once did, and all of that is perfectly normal. You can't expect the composition of any large group - business, church, golf club, internet forum - to remain constant over time.
Me, while I am still supremely excited to discover new golf courses and learn things about old ones - still rather more than I was before I first found this website, in fact - I am rather less interested than I used to be in talking about them on an internet forum. I haven't played golf since September for various reasons, and until the last week or so I'd been on virtual hiatus from the group since then. I can't say that I really missed it, and upon returning, I discovered that most of the topics being discussed are virtually the same (or familiar variations on an old theme) as they were before I left. I'm glad that the forum is still here, and I know I'll still pop in from time to time to ask the odd question - knowing that I'll get informed responses from posters both old and new - and even provide the odd answer where I can. Who knows, maybe I'll even become reenergized and want to participate more regularly again. But at the moment I don't think I have anything interesting to say that I haven't already said many times before, and trying to learn about golf course architecture here feels more like work than pleasure.
Of course, that's just my story. Not too long ago, I might have tried to interpret my feelings as a definitive judgement about GolfClubAtlas in general. Now, though, I think I know better than that: I can make that judgement for myself, but I wouldn't dare suggest that others need view the site in the same way. And thank goodness for that, I say!
Cheers,
Darren