Well, we have kids, and we like kids, but part of the fun of swinging for us is:
Grown-up Conversation!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
If you have kids too, and you like talking about them, fine. We'll talk about ours too. But if you don't bring it up, we won't either other than to let you know that scheduling can be an issue because we do have kids.
Besides, my kids are assholes. The 11 year old has a drinking problem, the 9 year old is a womanizer, and the 5 year old smokes way too much pot.
Seriously though, our kids are a big part of our life, and our vanilla friends hear all about them. But we don't bring up the topic on "dates" because we are there for us, not them. But if you ask, I will tell you the bare minimum I can about them, then move on. Not because you don't want to hear it, but because you don't need to know about them.