If you want to control the population you can make some individual infertile. Why make them gay?
Offtop:
A resource that opens access to all scientific papers on pubmed. One scientist gave me the link yesterday. I'm sharing it with you. Have a good time.
oh wow. that's awesome man.
Sex is not only about copulation. The mechanism of sex evolved synchronously for pleasure and sociality as well.
this video is kinda cool although the science behind it has not been replicated