have all of you decided to play OB forever, or am i missing all of you?
I make no claim at all to having any insights. But it should be noted that at least a few of us including myself remain active in the Morrowind forums, as well as here. I've got fully modded Morrowind and Oblivion games in progress at the moment, in what time I can spare.
The Skyrim forums are just as the Oblivion ones were when they first opened up, with the exception that there are even more people who seem to have checked their courtesy and common sense by the door before entering: [censored] who shout down anybody that utters a complaint, and trolls who can't say anything good. The moderators can't keep up with it all, and I suspect know better than to try. The times I've looked in there have been a few thoughtful, intelligent posts, but they're drowned out by the screams.
I've tried Skryim for about 4 hours. For me, in its current state, it's got little appeal: forced leveling, terrible UI, no spellmaking, a lot of anti-RPG self-replenishing dungeons without reason to exist (and with a sound when you've cleared them), etc. I'm sure that will change about 6-12 months after the CS appears, and we get elaborate quest systems, redesigned inventory/magic screens, more keybindings, etc. It's just a matter of time. But there's little incentive for me to play it now, and none to take part in what passes for discussions. Once the next greatest game of forever shows up, I'm sure many of those folks will move on.