Years ago, single and childless, I was held captive to a toddler's Mary Poppins sketch. Her parents were friends of a friend, who later "complained" that I wasn't quite as animated and risque as my friends had described. I'm not in the habit of introducing myself and launching into ribald anecdotes, even less so with the romper room set in attendance.
That evening underscored what I already knew, kids can be charming but it helps if you already have some sort of vested interest in their parents.
Having children doesn't eclipse every other element of my identity. And while I don't agree with some of the blanket sentiments held by Katie Roiphe in her "Get your kid off your Facebook" essay, I understand some of the frustration. Relating and communicating with people outside of my maternal persona is a very vital part of my life. I believe the inclusion of children at events where adults are trying to get to know one another stunts that process.
Securing childcare isn't always easy. But there are a multitude of parent-child centric activities that will prevent you from becoming a shut in. I'd prefer a hermits life then to attend most of them but that's a discussion for another day...
In short, just because no one objects when you bring your kids doesn't always make it a good idea.