[gowld]

Not necessarily.

https://www.sciencedaily.com/releases/2010/02/100204144551.h...

"Summary: Male homosexuality doesn't make complete sense from an evolutionary point of view. One possible explanation is what evolutionary psychologists call the "kin selection hypothesis." What that means is that homosexuality may convey an indirect benefit by enhancing the survival prospects of close relatives."

[oh_sigh]

Right, but OP seemed to imply that an individual choosing to not procreate was against some kind of basic biological functioning.