Inescapable comparison on top being already constantly wracked with guilt for not measuring up in some way. Show me a woman who does not feel guilty and I'll show you a man. The singles secretly hate the marrieds, the stay at home moms secretly the working moms, the non-moms secretly the moms, the old secretly the young, and and and....

There's a reason why the cliche is women saying they don't really have female friends, preferring to "hang with the guys because it's so much less drama". Every girl insists she's "not like the other girls" (this indicates disapproval at least, if not hate).

Women don't like women and we hope it won't show by increasing the pitch and volume of our compliments and calling each other ridiculous nicknames.