Who said it was? Can we stay on topic and not have emotional outbursts?
You said, and I quoted, It is none of your business what people do in their own homes.
Obviously this "principle" is not true.
People having children out of wedlock, a generation of fatherless children is not just something that happens in the bedroom. It may not be illegal, but it is ill-advised and, in general, a burden to society.
You are being intentionally obtuse. I am sorry that your life is so boring.