We are not from separate planets but rather from the same origin, and can get along much more easily than many seem to believe. While we may be capable of much more adaptation and change in the future, men and women are still different creatures presently. For an illustration of how different we really are, consider the following examples from the science journalist Marc McCutcheon's book Astonishing Facts About Humans. Women are reported to suffer 10 times more headaches than men, and are more prone to acute gastrointestinal problems, arthritis, diabetes, and hypertension than men. Men are especially vulnerable to personality disorders, including drug and alcohol abuse, where women suffer more from anxiety, phobias, and depression.
Women are more likely to attempt suicide, although more men actually succeed at it.
Marriage increases the risk of depression for women, and decreases it for men. By age 21, there are 68 male deaths for every 32 female deaths. And finally, by age 65, there are 7 surviving men for every 10 women. Women outlive men in nearly every corner of the globe and specifically in the US by more than 7 years. Men are more violent by nature than women.