The operative word is “believe”. I am not a cynic with regard to homosexual temptation. I am a skeptic. I do not believe all that I read. I am also a fellow sinner and I know that my actions, especially sinful ones, can influence my moral compass. It is often pointed out here, and rightly so, that the sin of homosexuality is but one of many sins. I believe this and try to understand that such people who fall in this manner are not necessarily worse than other sinners who fall in other grave areas. Since that is what I believe, I also view it as other sins when it comes to what is genetic, what is something we are “born with”, what extent we are influenced by others, and to what extent we can increase or decrease our desires.
Homosexual promoters in the Church can not have it both ways. If one is just born gay in a way in a that differs from the rest of humanity just being born sinful, then then the claim that it is just one sin among many, the same as adultery, heterosexual lust, greed, etc., is a hypocritical claim. Since I believe the latter, I am a skeptic as to the former.
I prefer less dramatic and what I believe to be a more accurate understanding that one may have a genetic disposition (yet to be proven, but still a matter of science not faith) to sexual attraction to someone of the same sex, or opposite sex, or child, etc., just like one may have a genetic predisposition to violence. Saying one is born gay is too akin to saying one is born a murder, a womanizer, or a child-molester.