I think if you ask, you'll still get answers.
I suspect most of the regulars are on Facebook. I don't mean that rudely, it's kind of mirroring what I have experienced in real live groups. You make friends with people you have a lot in common with (age of kids being one of them!) and you do stuff with them, and at a certain point, maybe without even deciding that consciously, you stop coming back to the open place where new people were welcome. Your own need to expand your friendship group has been met and you drift away.
That's my theory, anyway. But I still think it's a shame.
How are you and little munch, nic? Bet she's not that little any more! My boys are now practically grown up and are busy working out what they want in life. It's a new phase, hard for them but kind of nice for me to have one last major round of feeling needed...