Rick Santorum brought this up years ago, and caught hell for it—from the gays. Fact is that if homosexual marriage is allowed, then polygamy and polygandry will soon follow—and incest. Because we can witness this in denenerate families. Remember “Tobacco Road?”
I have always liked him.
I took the cue from this article and brought up the question with my younger son and nephew at dinner last night. My Nephew is 20 and my son is 17. I asked them if it's consensual, they are adults and no children are being born why is it wrong?
It led to a great discussion about the need to have healthy families if a society is to thrive and grow.