People write biographies for a variety of reasons. Biographies are often written to document the life and achievements of a particular individual, to provide insights into their personality, motivations, and experiences, and to inspire and inform others. Biographies can also be written for historical, educational, or entertainment purposes. Biographies are a way to share stories of interesting or inspiring people, to offer perspectives on personal or cultural history, and to provide insights into the lives and times of significant individuals. 

Biographies can also be emotional assets, as they offer readers the opportunity to connect with and understand the experiences and perspectives of the people being written about. Biographies can be deeply personal, revealing the struggles and triumphs of the individual being written about, and can inspire and motivate readers to learn from the lessons of their lives. Biographies can offer insights into the human condition and can serve as a source of empathy, compassion, and understanding. 

In many cases, biographies can also serve as a source of pride for family members and loved ones of the individual being written about. Biographies can help to honor the legacy and achievements of an individual and can offer a sense of connection and continuity across generations. Overall, biographies can be powerful tools for storytelling, reflection, and inspiration, and can serve as both emotional and intellectual assets for readers.