If you're reading this right now, how old are you? What would you say the average age of your playgroup is?
I got really excited today when I saw that my local library sponsors a D&D playgroup, but came down later when I found out it was only for 13-18 year-olds. D&D didn't really strike me as something necessarily for teens. I'm 25, my playgroup is about the same, and I can vaguely remember meeting a couple gamers that were 35-40 years old.
Of course, this is the same library that's putting some heavily adult-themed manga in their Young Adult section, so I suppose they could just be a bit blurry on their age boundaries.