My two cents worth (Australian, so they aren't worth a lot ).
1. There are hot-button issues that inflame people and it is too easy for rational discussion to turn into angry mobs yelling and abusing each other. I fully support the idea of trying to avoid those issues -- I've seen forums get wrecked as a consequence.
2. I would think that there are enough non-science fiction/fantasy stories available to keep anyone happy. I'm so far behind in my reading list that it's not funny. Some of those stories are not hosted here, but I don't see that as something to worry about. There are high quality authors here in all genres, and if that means that there are some I won't read (because I don't like the genre), then I don't have a problem with that -- I just stick to the genres I DO like.
3. People move around -- as Sharon said, it's a fact of life. Some have unrealistic expectations, some realise that they need to do things differently, and some simply change and find that they need to try something different. It can be disappointing to those who miss them, but it happens in real-life as much as it happens on-line.
4. People have a variety of tastes. Some people like the games. Some people like in-depth discussions. If there's been a lack of the later, then I would say that is just natural variation. I personally think there have been a number of such discussions recently, though mainly in the Teen Forum. I won't usually start one, but I'm happy to participate (like with this thread ).
5. I was mildly annoyed by Myr's comment above about drama queens and the implication that they seem to be a consequence of being a gay community, but as I don't know Myr I'll accept Old Bob's view that it was meant to be humourous.
Just my opinion.
Graeme