People work their entire lives to reach the pinnacle of their career. We all know presidents, diplomats and other seemigly dignified people who throw their entire careers away for a few moments of lust satisfaction.
The same can be said about the heads of families. They too have thrown marriages, spouses and the future of their children away while fanning the flame of their lust.
What a shame!
One can't be free if he or she is a slave to lust. It's worse than being locked in the worst jail. That's why we put so much emphasis on modesty and personal holiness, for nothing severs a person from Hashem like lust, and nothing enables a person to get so close to Hashem as personal holiness.