I would suggest that a bigger threat to humanity’s future and human dignity is probably blind adherence to a rich, totalitarian authority figure who claims to be THE inerrant spokesperson for God… but @whatdoIknow.
I would also note that someone who claims that contraception is not permitted based on his interpretation of a 2500-year old myth is far more of a threat to humanity (see: AIDS and poverty in the third world) than anyone who just wants to commit the rest of their lives to a loving partner.
You know what, Benedict? There are billions of people who disagree with you, and there are a lot of them who are gay. They ARE humanity. What they are a threat to is not “human dignity and the future of humanity”, but to your power, as well as your position as official interpreter of your particular warped brand of God-ese.