It promotes creativity. Since everyone has their own idea of how Naruto's story could be different if he was adopted, there are a wide variety of fanfictions. This encourages different writing styles and interpretations of the Naruto world. Writers can explore different cultures, relationships, and powers that Naruto could have if he was in a different family situation. It also helps new writers to get into the Naruto fandom as they can start with this simple yet interesting concept of adoption in their stories.
The Naruto universe is rich and full of possibilities. Everyone wants to adopt Naruto fanfiction because it can be a way to fix some of the sadder parts of his story. For example, in the original, he grew up alone without his parents. In fanfiction, by adopting him, writers can give him a more loving and supportive family environment. This can lead to all kinds of new adventures and character development for Naruto. It also allows fans to show their love for the character in a very personal way.
In the fanfiction, Naruto and Temari could face opposition from their respective villages when they decide to adopt. Their friends and families might be worried about how they will handle raising a child while also being shinobi. However, they are determined. They work together to prove that they can balance their ninja duties and parenting. They start to teach the child ninjutsu and other important skills, and the child begins to thrive in their new family.
Maybe in a story where Iruka adopts Naruto to protect him from various external threats and help him grow stronger in a more nurturing environment. This could lead to many interesting character developments and plot twists.
Maybe an old hermit who lives in the mountains outside Konoha adopts Naruto. The hermit could be a master of some long - forgotten ninjutsu. Under his tutelage, Naruto would learn these ancient techniques and use them to protect the land around the hermit's dwelling. He might also gain a deeper understanding of nature and chakra from the hermit.
One consequence could be an imbalance in the world's population. There might be too many people for the existing resources, leading to shortages of food, water, and living space.
It could be that his new 'godlike' power has isolated him. People might be either in awe or afraid of him, and he may feel that he can't be close to others as before. So he acts coldly as a defense mechanism.
One story could be that a wife, having grown up in a diverse community, has always been inspired by the strength and culture of black families. She feels that bringing a black baby into their family would not only expand their family's love but also expose them to a rich and beautiful culture. She might have seen the positive impact of interracial families in her neighborhood and wants to be part of that inclusive movement.
Iruka Sensei could be a likely candidate. He already has a close bond with Naruto and cares for him deeply. Adopting Naruto would be a natural extension of that relationship, and he could provide Naruto with a stable home life and continue to mentor him in his ninja training.
A strong female ninja from a hidden village that was destroyed. She has a big heart and sees Naruto as a chance to start anew. She can teach Naruto her unique fighting style which is a blend of agility and powerful strikes.