Homosexuality is perversion. Sodomy is an abomination that cries to heaven for vengeance. It was condemned by saints and the magisterium. Christ destroyed five cities because of it. God created men and women to be sexually complimentary to each other. That is his plan of creation and the natural order. People who behave in a sexual manner with others of the same sex is contrary to the plan of creation and natural order and is gravely offensive to God.