Two arguments here.
1. Every single monotheist religion (and many that aren't such as Buddhism, Taoism, and others including Sihkism, Jainism, etc) throughout history has always considered same sex acts to be against nature, and marriage to be man+woman. So this has absolutely nothing to do with sectarianism. It just so happens that this country was founded by and settled by primarily Christians, with a fair number of Jews, so the term Judeo-Christian morality; and since the Christian morality is based on Judeic scripture and tradition there really is no difference in the basics.
So you're opposed to any morality based on any religion?
2. Since it appears that you oppose any morality based on religion, what do you propose to substitute for moral absolutes? By rejecting the moral absolutes that are almost identical in every single religious scripture, you open the doors to a dog-eat-dog system of "morality" which leads to anarchy, and then totalitarianism.
By leaving aside all moral absolutes, give me a good reason why consensual cannibalism should be a crime.
P.S. If you want non-religion based arguments about why homosexuality should not be normalized (and shoved down everyones' throats) read EdReform's links to the Index of articles about homosexuality. If you haven't studied up, then your support of homosexuality is based on the grossest ignorance.