[joesmo]

"Men are consistently more arrogant, manipulative and risk-prone than women."

Do you need another reason? Many "leadership" positions rely on arrogance, manipulation, and risk-taking. I'm not saying it's right, but it's definitely reality. Leaders are there for their own well being first and foremost, not that of those under them. Failure to understand this is a failure to understand leadership and management as practiced in real world businesses.