The scientific reality of male and female is clear.  Anatomy and physiology could not be clearer,and it is on that basis that marriage was created.  Nothing has changed in the history of mankind (or other sexual reproductive species) of been discovered to change the biological reality.  What has changed is the creation of a "science" called psychology that seeks to "prove" normality of homosexual acts through pseudo science and the grasping at straws.  Guys like Kinsey and his "research" show us how easy it is to create false data and, without challenge, change the logical thinking of a lot of people.