Being gay is a fetish.

[Hatshepsut]

As Esquilax already pointed out, there is also more to being gay than anal sex...

I'm glad to know this as I doubt my aging rump would stand up to the mechanical stresses.

In Egypt an object like the nTr, a wooden rod ornamented with a spur at one end and the whole wrapped tightly with linen, is a fetish. So is a mummified crocodile. As a fetish is an object of veneration or worship, is being gay a form of worship as the thread title proposes? Unlikely as you need not worship in order to pop a boner if you're a guy. Rather you'd have to be gay first then worship the fact later. While Father Darwin has indeed tied sex urges to the procreative imperative, He's done so indirectly: The creature blushing with desire need not be aware the act will lead to spawn, and in fact there existed human societies known to anthropologists where the 9-month connection wasn't made.

I'm with Esquil...through the human medium of culture we have expanded our world of sexual sensation to give it meanings which can be entirely unrelated to layette and crib. I'm inclined to believe contrary to the gay party line that developing homosexuality may well involve elements of conscious choice. However, we can make choices as early as age 2 before we even have a concept of free will, nor can an element of choice imply that sexuality is easily reversible once it has developed. Decisions conscious or not often lead to being committed to the path chosen. That's true of certain cigarette smokers who can't seem to stop despite knowing their condition will kill them. It should be more true of a fundamental part of our makeup like sex, which we explore very early on.