Hi indigo!
I think your feelings are pretty normal. I feel the same when some of my pupils mothers are chatting and laughing about their kids...
Being some kind of outsider is almost normal for CF women/men I think, because we are free thinkers in many ways...and anyone who's way of life is different from the crowd is some kind of "alien"

I just have a few friends, most of them are older then me and my husband (with or without kids), but they are very near friends and that's all that matters.
So: Quality matters more than quantity!!!!
Juliana