I agree. Out of several thousand firemen, a dozen leave their wives? Maybe 1-3%. If you asked any 100 men to console and support extensively a grieving widow, whatever the connection, I would wager than up to 5% of the men would always jump ship. It's inevitable. The women are lonely, some of the men have wives that "don't understand" them, and some of the widows will be extremely attractive or rolling in life insurance money.
This is interesting but hardly a sign of the decline of Western Civilization.