Laws apply to individuals, not society.
And why is it important to protect the individual? because society is built on individuals. Society cannot afford to have a bunch of 'damaged' children conceived. So pains are taken to reduce the chance of that.
If society had no interest in healthy children then all incest laws would vanish instantly.
Laws do apply to individuals but laws are made for society's benefit. (I know of no law that benefits just individuals without a greater benefit to society as a whole. Can you name one?)
Laws apply to individuals in society.
Both must be maintained.
Shalom.