You understand it wrong. Homosexual-like behaviour has been observed in only a very few examples in a very small number of species.

There are social reasons by bullied and dominated chimps might seek out only male or only female company or why they do not mature psycho-sexually. To date, no genetic cause for human or the very rare homosexual acts of animals has been found. The Discovery article may have interviewed someone who believes it possible this gene will be found but no such gene exists.

Even if a gene were to exist it would be immoral to not try to resist it as some other's resist the gene that makes them more predisposed to alcholism because homosexuality is wrong, a mortal sin and not beneficial to and ordered society -- especially if they are allowed the privilege (its not a right) of marriage and adoption.

Not sure Copernicus was treated all that badly, but the Galileo situation is more complex than just "censure" which is not even an ecclesiastical term. Galileo went too far in his assertions and was advised to reword
them by Robert Bellarmine and others. Still, a partial apology was in order.

Also Pete: even a high school forensics (debating) coach would disqualify your comment to me because you predicated your argument on the "Appeal to authority fallacy" - just because a malady or disorder has been taken out of a medical diagnostic manual does not mean all physicians agree it was a good decision.

Next you'll tell me that the majority who believe homosexuality to not be normative psychological behaviour makes your argument too ("appeal to the majority")

If you feel it is perfectly normal psychological behavior and no overbearing moms, distant fathers, child sexual abuse or identity conflict issues contribute to it or, that it is permanent let us know and why you believe this.

Hint: all the "I was born homosexual" biological research has hit a dead end. Especially the twin studies and hypothalamus ones.

Its a disorder. If you disagree tell us why it isn't without merely citing its recision from a book as your proof.