Sexual Orientation: Genetics or Socialization

It is hard to believe that less than 50 years ago being a homosexual was classified as a serious mental illness as to which people suffered endlessly in the search for its cure. And although today that is not the case, there is still a lot of controversy about what makes someone become gay. This has lead to a wide variety of theories, some more creditable than others, but all surrounding the belief that there is something that makes a person gay.
Some scientists and researchers believe that there is such a thing as a "gay gene" present in a homosexuals DNA. Others have come out saying that it has to do with the hormone levels that an infant is exposed to in the womb. There are even those that believe that you can tell the sexual orientation of a person by the time they are six years old. (That is crazy).
I say, why can't we just call it natural. All throughout the animal kingdom there is documented homosexual behavior. Giraffes, lions, swans, and even the mighty bison all have been captured having intimate homosexual moments. Even mammals that we consider to be smarter and more like us, such as dolphins and monkeys, have displayed attraction and affection for those of their own sex. It is natural for males to be attracted to females because that is how our species survives. Why therefore, could it not be just as natural for two members of the same sex to be attracted to each other as natures way of helping to balance and maintain the population? Society has seemed to deem homosexuality as unnatural not nature. A persons sexual orientation is only one facet in a persons identity and does not make up who they are, therefore it should not define them but be one characteristic to describe them.

Questions:
1. What do you think about some of the theories that are associated with homosexuality?

2. What are the two most important factors that help a person in developing their sexual orientation?