Rational, sexual, or emotional

It is often joked that men tend to think with their reproductive organ and are therefore considered to have more animal nature than women do.

Women, on the other hand, are often considered to be more emotional than men and can naturally let physiological changes to shoulder the guilt of mood swing.

Human are sexual beings by definition. Men and women, are really driven by the same basic instinct.

These sex-biased random thoughts came when I was thinking why human have to be rational. Somehow, I thought there should be connections between rational thinking and interaction between sexes, or maybe I am trying to rationalize some nonsense?