I am not child free, by the way. But I have been using MN more than I normally have, and every other post seems to be a subtle ( or not so subtle) way to take a dig at the child free. I occasionally dip into the Child Free Board but don't post there as that is not my place, but there are parents there too, arguing away.
I have many child free friends- they don't give me parenting advice, I don't give them any advice- and I don't really understand why posters here are trying to widen the gulf between different groups of women.