Bitter protests and tears were vain, for divorce courts do not consider human hearts when they collect their dues. I became a slave to despair. I wish I could take the hand of every parent harboring the thought of divorce, and lead you back with me into the valley through which I have come. If the hurt of an innocent child's heart, the bitter shock of a tender life, the tears of the unwanted, misplaced child, the horror and gloom could be called to witness in the divorce courts, no child would again have to walk the dreadful road that starts with the signing of those final papers in the divorce courts. Instead, the tears would become your own and in the valley you would realize that the ones who suffer in divorce and remarriage are the innocent children.
Divorce creates further barriers to reconciliation.
While we are not discussing separation here, we can readily see that Paul instructs towards reconciliation, not away from it, even with unbelieving partners. And he also implies that divorce is like adding a padlock to the door through which an unfaithful partner has gone. Where reconciliation is the objective, divorce cannot be an option. Divorce perpetuates sin. People choose divorce as an answer to their marriage problems.