Women who are unable to get on with other women are in my experience very insecure. Unless they can relate on the eyelid batting front they don't know how to communicate. Which is a major flaw in their personality.

I also wonder if they realise perhaps through experience that women can actually see through other women much more easily than men, and are eager to keep their shallowness to themselves.

Men are great...you really are! But so are women.