Sorry to piggyback off of your post. I'm don't have kids, but one time I was shamed by a group of them for saying I was tired. Apparently if you don't have kids you're supposed to have a great sleep every night and not get stressed about anything. I was called some pretty nasty names by people who call themselves the most "selfless, generous people in the world".
Try not to feel bad for getting shamed by the moms, they'll shame everyone.