Is marriage/divorce destroying the American culture, cohabitation better?

Secular marriage is already shaking up in America, india and all over the world.I justify her statement marriage in church is to edify the body of christ as a Christan's.it is not blasphemy but adultery without church ratification.one cannot say that divorce or bankruptcy is at war and there are other factors to be taken into consideration.it is true divorce rate are alarming not only in america but in third world countries like India, china and japan too.co -habitation is more worse than divorce.it destroy the foundation for family.