Many Christians see the law as a system of righteousness that failed. That does not make sense, because God does not make mistakes. The problem is that the law was never intended to make us righteous.
Paul is very negative about our ability to be saved by works of the law, but he is positive about the law itself.
Therefore the law is holy, and the commandment holy and just and good (Rom 7:12).
What could be better for the functioning of society than a set of laws that are holy, just and good? Any other set of laws will be suboptimal. They will be partly unjust and not always good. Why would any society want to have suboptimal laws? God’s law must be the best, because he is God.
Christians say that they live under grace and not under law. They then jump out of the frying pan into the fire by choosing to live under human laws. And very few see a problem with this strange attitude to human law. I cannot understand why Christians living under grace want to live under human law.
God’s law is good. It cannot provide peace with God; only the cross can achieve that, but it is still the best basis for a harmonious and just society.