Re: If people are really born gay..
I think there is another force at work here other than genetics or choice. It's spiritual. There are certain spiritual laws perpetually in existence that are in action regardless of a nation's laws or cultural fads of the time. Just like gravity, every single human being is subject to these spiritual laws. For instance, people who don't really acknowledge a higher power will nevertheless attribute certain events to "Karma" when referring to a baddie getting his just desserts seemingly unrelated to his past bad deeds.
Similarly, it is revealed in the Holy Bible that certain people who once believed in God but turned away from the faith were "turned over" to their ungodly lusts and to do unnatural acts of sodomy and gay rape, etc. So really once turned over to such things the gays become slaves to that behavior. They couldn't stop it if they tried. They no longer have a choice. This spiritual force is even stronger than genetics. The only thing that could stop it is repentance and divine intervention.
Another spiritual law is generational sin...i.e. God visits the sins of the fathers to their children, and to their children's children, unto the 3rd and 4th generations. So if a father fell away from the faith and was turned over to gay lust and sinned in abominable ways, then chances are that same sin/temptation will crop up in the flesh of their generational children assuming they ever actually mated with the opposite sex. Of course if their flaming homoedness actually prevents them from having normal heterosexual relations at all resulting in offsping, then their bloodline and also the sin stops there with their death and destruction.
I don't ever hear ANYONE talking about that perspective but it's the most plausible explanation that I can see.