Societies have choices.  Nature DEFINES all that exists.  Sane societies will chose to live by the laws nature defines.  Societies that choose otherwise will cease to exist.  They become EXTINCT.

The physical nature of the human species is a BINARY DISTINCTION.  It's either XY, or it's XX.  EVERY ONE of us is either one or the other.  Now that we have been created with THAT  DISTINCTION, we are individualized WITHIN THOSE TWO DISTINCTIONS  by the seemingly infinite combinations of elements within our UNIQUE DNA.   

A sane society organizes itself to exist in accordance with that simple structure.  To choose otherwise ALWAYS RESULTS IN extinction.  It's called INSANITY.  It's a matter of life, the continuance of that proper social alignment or it's death.  Let's all choose LIFE!!