Having a few friends who are gay and Bi I must say its a mix of both born that way and choice. I have a few friends who became Gay and Bi later in life. One says he liked girls up until he had sex with a man. Now that individual in my opinion chose to be gay, he experimented sexually liked the experiance and then made the choice to have sex with other men.
However I also have had a recent friend come out of the closet who never dated a girl and while I had no clue he was gay he claims to be genuine and never to have liked girls. So in his case I'd say he was born with a disability.
Homosexuality is a disease as I'd call it. Its a genetic deficiency that occurs in a few people out of every million or so. Like autism or Downsyndrome, however I believe that many homosexuals are not actually gay by this disease, from personal experiances with my friends who are gay most are gay by choice.
The gay movement is not about respecting someone based on their genetic disposition, it is about converting people over to their belief.
Also while I believe that some people may be infected by this disease (Homosexuality) sleeping with an individual of the same sex is still a choice and as such homosexual acts are no less a choice then heterosexual acts.
Example as a Christian I believe in celebacy till marriage, if I never get married I will be celebate till death. Monks and Nun's take vows of celebacy and do not have sex during their entire lives, yet they are straight and are tempted to have sex constantly. As such someone who is gay and is attracted to people of the same sex, is not forced to sin (Have sex) the choice to sin is made.
I know a gay individual who was getting married to a lesbian. Both were apparently gay yet they loved each other and were getting married. They planned on having kids and apparently had sex. Now he got in a car accident and was paralyzed from the kneck down, so she left him. However it proves my point just because your gay doesn't mean you have an excuse to have sex with another man (Biblically or morally).
As such I believe in two types of homosexuality. The sinning type (Having sex with another man) and the good one (Choosing to abstain) rather then sin. Or the even better one find a woman you love and marry her regardless of whether you like men or not.
Fact is acts of homosexuality are for sure a choice, whether or not you like the same sex, maybe not. But in the end the final choice to sin, is still a choice! So I would say I disagree with both answers on the poll. I don't think having homosexual desires is a choice, but acting on those desires is!