The Constitution was not written to take the place of moral law, but to supplement it. In those days before both birth control and welfare, marriage was an economic as well as a social bedrock for the care of children. Now the economic part has been eroded by the government, and as a result, our society is sick and suffering.
As the Founders observed, our Constitution was written for a moral people. Once morality lodged in the individual through his or her own personal effort goes away, pffffft. It's all over but the shooting.
Well said.