I saw two mothers at a church group with babies who were roughly six months. One of them was bottlefeeding and had decided to introduce solids at 3 months, the other was still exclusively breastfeeding at 24 weeks. The lady who had introduced solids was very vocal about her decision to introduce solids and was suggesting that the other mother was somehow starving her child by delaying weaning. The mother who was waiting to wean was equally nasty and told the other woman that she was wrecking her baby's health by stuffing it with wallpaper paste.
I felt it was sad that here were two women who were both insecure and it was sad that they could not agree to disagree on parenting decisions. It was sad that they could not at least try to be friendly. The world would be a boring place if we always agreed.
It is sad that many women respond to bitchyness with more bitchyness.