In amateur boxing, what matters most is gaining round experiences. Your win and loss record doesn’t matter. The only time winning or losing really matters is at tournaments and other qualifying venues.
But, tell that to the person experiencing the loss. Losses are hard on the soul. They make you question your efficacy, your worth, your skill and abilities. Losses make you feel exposed to the world. The world doesn’t know how to talk to you about them. Making matters more difficult, people are ready and willing to approach you after a win.