It is true, working for insecure women bosses is no less than hell. They can demean you in front of coworkers, make you feel worth less and use you as a step stool to promote their interests. However a secure confident women can be a pleasure, they can help you all the way and be a formidable force for your career growth. I have worked with both kinds and have a taste of both the experiences.

Insecure women are horrific to work with but secure women help other women.
You are competing with other women for a few jobs.  As women become more secure and stable things will change.People  blame the victims. Women bullies in the position of power get away while their victims get blamed.
They feel guilty, women are making less money than they deserve. When you are truly powerful you feel happy. Women are in workplace but they are not relived from their duties in the household. There is a sense of exhaustion. The sleep deprived friends are more women than men.
These and many more reasons make women less competitive in the work place, they receive less money, less bonuses than they deserve or contribute because they are considered secondary bread winners.  So corportions prefer to hire women than men as they get more value for a cheaper price. This was also proved by a poll conducted by CNN recently. Hence women are out-numbering men at workplace.
For many years, some of the smartest, hardest-working women have whispered a quiet complaint on the job: They find other women, in general, harder to work with than men.

A new study about women in the workplace,  started this notion that this is a common belief; women are more likely to bully other women on the job, and interfere with the prospects of other women being rewarded with higher pay, better positions, or even praise.

The problems that men have caused for women on the job are well-documented, everything from sexual harassment to sexism in promotions but women back stab, gossip and ridicule their women coworkers shamelessly. It is a battle of sexes where all is fair is this war.