A new study shows that divorce will cut a person's wealth by 77%, while getting married approximately doubles wealth.  Married couples increase their wealth by about 4% per year, just by staying together.  "Divorce causes a decrease in wealth that is larger than just splitting a couple's assets in half," said Jay Zagorsky of Ohio State University, apparently the author of a paper in the Journal of Sociology that details the 15-year study.  "If you really want to increase your wealth, get married and stay married."

Money isn't the main reason to get (and stay) married, but the above conclusions point to the perfection of God's plan for society:  Families based on marriage.  By living together and working in cooperation, a husband and wife generate more productivity than they could by themselves.  And as far as I can tell, more productivity means a stronger economy.  Families and money, the stuff of a great nation.