DEAR ANNIE: I have been married to my spouse for two decades and in a committed relationship with him for 23 years. We are parents to a 17-year-old son. While our relationship is characterized by mutual love and respect, I am concerned about the state of our physical intimacy. Despite repeated attempts to initiate discussions on the topic, my husband becomes defensive and dismissive, asserting that I place undue emphasis on sexual intimacy and that it should not be the primary focus of our marriage. This lack of intimacy has adversely affected my emotional and physical well-being, although I m…