It has gotten me to think about this. In general male and females are the same except we have organs that allows reproduction. Essentially that's it. As we passed the 7 billion people mark (let alone 2, 3, 4, 5, and 6 billion) do we really feel the need to populate? Sure a lot of us are embedded with sexual desires, but as the population grows sex for recreation takes place over sex for survival.
This bring me to another thought about conservatives. They disagree with sex between the same gender. In a way they have a point. Googling "conservative" grants the following definition -
"holding to traditional attitudes and values and cautious about change or innovation, typically in relation to politics or religion."
Back in the day there was much more of a need for sexual reproduction as the human race had been plagued with deaths, diseases, and unfortunately events. There was no need for "nonsense" like having fun. We had to survive! You'd follow an order (be it wealth, race, gender roles) and that's that. As we began to master or land and really create our own destiny having fun (e.g. sex) became something to do for fun. Its a circle...
Idunno, just a thought. Its an interesting topic non-the-less.