Adam Clarke on Proverbs 2:19

None that go unto her return again - There are very few instances of prostitutes ever returning to the paths of sobriety and truth; perhaps not one of such as become prostitutes through a natural propensity to debauchery. Among those who have been deceived, debauched, and abandoned, many have been reclaimed; and to such alone penitentiaries may be useful; to the others they may only be incentives to farther sinning. Rakes and debauchees are sometimes converted: but most of them never lay hold on the path of life; they have had their health destroyed, and never recover it. The original, חיים chaiyim, means lives; not only the health of the body is destroyed, but the soul is ruined. Thus the unhappy man may be said to be doubly slain.