I just don't understand..

Ms
I have tried my hardest, but I just can't wrap my brain around it. How can women be so negative and unsupportive of one another? In what universe is it OK to bash another mom because you don't share the same parenting style?
On the posts where people ask things like "will you use crib bumpers?" Or "will you vaccinate your child?" By all means, share your answer and explain why. But how is it ok to then respond to all comments that oppose tours and call the mom stupid, uneducated, or countless other things??
Just because something is right for your family and your child does NOT mean that it's the right thing for somebody else.