GG
Lets analyze it
P.S All the numbers are from my mind or consider it an example:
One man can sleep with many (1,2,3,,,10 Depends) women, and you there is a chance to make them all pregnant that time.
While each woman can get pregnant once every 9 months (at least)

So the world needs more straight men that straight women to safe the human being.

what do you think GG?
It is just a guess