I guess the old saying, coined by Fr. Patrick Peyton in the 1940s is true! Researchers have identified that families that pray together stay together! From CatholicCulture.org:

Research by social scientists has produced a huge mountain of data showing that families with a strong religious commitment—in particular, families that pray together—are more successful in a wide variety of measurements: staying intact, obtaining a good education, avoiding crime, escaping poverty, etc.