Without making any kind of statement about which "side" might be right or wrong this is exactly how the homosexual community will react the moment that someone, somewhere figures out what exactly makes a person homosexual vs. heterosexual and then announces that they can change them from one to the other. The first gay person, for whatever reason who gets "treated" will be attacked mercilessly for It by people who feel that he's betrayed their culture.
Now whether that's ever possible I don't know and really don't care. Gay people surround me at work and at home and it doesn't affect me in the least bit. The only thing I want them to be able to do is be happy and enjoy their lives. I don't think it's a sin or a problem at all but someone will and if they find a gene that can be changed or a spot in someone's brain that can be modified in some way to "fix" them they will and then all hell will break loose.
I think it's just human nature.