Detachment is freedom. When you don't care, you're free to do what you want. When you don't attach to outcomes, you're free from anxiety. When you don't need her validation, you're free from desperation. This freedom is attractive because women sense it immediately. She knows when a man is chasing versus when he's choosing. For marriage, maintaining some detachment and independence prevents the codependency and enmeshment that suffocates long-term relationships over years of constant togethernes