Daily Wisdom 99: Proverbs 5:20

Proverbs 5:20 (NKJV) — 20 For why should you, my son, be enraptured by an immoral woman, And be embraced in the arms of a seductress?

What purpose is served by moral impurity? When a satisfying relationship is possible in a fully legitimate way, why would someone turn from his lawful companion to develop a furtive, fruitless, and frustrating relationship with another?