The sorrow they usually feel is not a productive godly sorrow. The sorrow men typically feel is a worldly sorrow that drives them further from meaningful relationships and endeavors and deeper into a self-absorbed, safer way of life. Men who use pornography find self-imposed shame easier to live with than the risk of rejection by others. They instinctively know that the path of real honor and dignity leads to the risks of honest relationships. Although deep inside they want to open up and be more involved with others, they feel inadequate or fearful that others won't be able to accept them as they are.
Men hate failure as much as rejection.
For some, using pornography is a way to avoid the threat of failure. The shame they feel takes them out of commission. It tells them they have nothing worthwhile to give. It renders them useless, and enables them to hide in the dark shadows of immorality and avoid the potential agony of failure.