A person's sexual orientation is an extremely personal matter. Parents should not be able to subject their children to a "therapy" that intends to change their sexual desires. Religious beliefs, moral beliefs, worldviews and the like should be things that people choose, and not things that are forced upon them. If someone who is over 18 wants to change their sexual orientation (which I believe is impossible) they may seek out ways to do that, but parents should not be putting kids into programs to change their sexuality. They just don't get to make that choice for their children. Your body, your sexuality, your choice.