Thank you for your question. I'm not sure what, exactly, you are asking "why" about. If you mean specifically number 5, the answer is kind of simple. She doesn't feel connected to you. For whatever reason, your wife feels disconnected emotionally, and for most women, when they feel disconnected, then they cut off sex to get your attention. It's a catch-22 because both parties are hurting and feel neglected. The best marital advice I learned said that the more mature person acts first. So, if you want to be the more mature person in this situation, you forgive her first. You move first to rebuild the relationship. You move things forward. Women want to feel loved, appreciated and acknowledged. Reconnect with her to rebuild your physical intimacy. Talk and listen. Gently hug and kiss her, without a demand for more. Unfortunately, someone has to act first. Best of luck to you.