I guess it stirs me b/c I see it as completely unnecessary, and a colossal waste of time and energy and resources. I wouldn't want someone to try to change my sexuality and make me a homosexual, so yeah, if I were them, I'd be stirred up too.
To consider it a disease I have to believe the act of being attracted, sexually and emotionally, to a member of the same sex as harmful, destructive, morbid. I don't, therefore I cannot see it as a disease, the same way I consider left-handedness is not a disease.
I have no problem with two competent, consenting adults being in love and making a commitment to each other. In fact, I have come to believe it is a beautiful thing.
Harmful sexual behavior is a separate issue - whether that behavior is in relation to someone of the same or opposite sex is completely irrelevant. If you're referring to AIDS, sounds like we should support protection and monogamy, not heterosexuality. I mean, imagine if all the gay guys with AIDS suddenly were "cured" so they could have sex with women? Then the disease would really explode.