Homosexuality seeks to destroy marriage as we know it, unity as we know it, family life as we know it, so how can we endorse that? That is completely outside what God planned for humanity. When God created man, he saw man was alone and added a female mate for him. Why didn't he pick one of the baboons, one of the lions to make his partner? He could have done so. He didn't. Homosexuality is nothing short of sinning against God with impunity as you are going against his will. Homosexuality is wrong, it's from the devil.