Well said. Actually, the problem goes even deeper than you wanted to suggest.
One of the hallmarks of humanity is the fact that we are moral agents. In Christianity we say humans are made 'in the image of G-d.' When we cease to be able to make moral judgements, whether about homosexuality or fornication or even stealing from the taxpayer to pay for unConstitutional programs, we deny our humanity. We become nothing more than intelligent beasts. C.S. Lewis argued this very cogently in his book, The Abolition of Man. He didn't make it based on Judeo-Christian morality, but on the common morality that all great religions shared before the abolition began.
When he found that Liberals and Publik Skool graduates couldn't follow The Abolition of Man due to lack of coherent thinking skills, he fictionalized the same concept in the book, That Hideous Strength. People on this thread might want to read one or the other.
Shalom.