Never underestimate the power of the familiar. It has kept countless people from change, even when change would save their lives. The familiar may be unhealthy, but at least we know it. We relate to it. And we’re all too prone to cling to familiar territory.
When that familiar territory is sexual activity, it becomes perversely dear to us. Even though we admit it’s wrong, we also come to see it as an old friend. It’s reliable, and it works. It eases our pain and temporarily satisfies us. To repent of habitual sexual behavior is like abandoning a trustworthy buddy.
Compare this to drug addiction. A person doesn’t just fall into it. Somewhere along the line they discover satisfaction through a chemical. It temporarily eases pain, helps them forget troubles, and provides comfort. It is an anesthetic, deadening anxieties like a nurturing parent. Of course there are other ways to deal with problems, but the drug is familiar and has a good track record. Why give up something that works?