Their names are familiar: Arnold Schwarzenegger and Maria Shriver; Al and Tipper Gore; Frank and Jamie McCourt. Besides fame, fortune and power, what do these couples have in common? They all chose to separate and divorce after more than 20 years of marriage.

This trend is not limited to movie stars and politicians. Now, it seems more than ever, couples are divorcing later in life. What is the cause of this? Is it the advent of Viagra? Social media? One can speculate as to why, but it appears that the “seven-year itch” is being replaced with the “20-year ditch.”