The main reason might be the contrast between the two characters. Harry is from a world of magic and mystery in Hogwarts, while Luffy is all about adventure on the high seas in the One Piece world. Writers like to explore how these two different personalities and power sets would interact in a shared story.
It's about expanding the world. Harry Potter is such a rich world, but there are always unexplored relationships. Harry and Blaise represent two different houses and mindsets. Fanfiction writers can use their relationship to show different aspects of the wizarding world. They can write about how they deal with the prejudices between Gryffindor and Slytherin, or how they could work together to overcome common enemies. Also, it's a way for fans to express their love for the characters in a more in - depth way.
People might write blaming Harry fanfiction as a form of creative exploration. They may feel that the original story didn't fully explore the consequences of Harry's actions. So, in their fanfictions, they put him in situations where he's blamed to see how the story could unfold differently. It's also a way to create drama and tension within the fan - created narrative. They can introduce new conflicts and relationships based on this blaming premise. For example, if Harry is blamed for a certain event, it can lead to a rift between him and his friends, and the writer can then explore how they repair or further damage that relationship.
People write this type of fanfiction because it offers a fresh perspective. It allows them to break away from the traditional magic - centered storylines. They can explore how a character like Harry, without magic, would interact with the wizarding world.
Some people write it because they see a potential romantic connection between Harry and Hermione that wasn't explored in the original books. They want to fill that gap and create their own version of the story where the two characters get together romantically.
People write it because it's an interesting crossover concept. Combining two very different characters like Harry and Artemis allows for a lot of creative freedom. Writers can explore new relationships, different magical systems interacting, and unique storylines that wouldn't exist in the original universes.
People like to write Ginny and Harry fanfiction because they love the relationship between the two characters in the original series. It gives them a chance to explore what could have happened after the books ended.
People write it because they like to explore different relationship dynamics. Harry and Draco have a complex relationship in the original series, and fans want to see what could happen if that relationship took a more romantic turn.
The main reason is that it allows fans to play with the existing characters in a new way. Harry is the hero of the story, and Myrtle is this overlooked ghost. Combining them creates a contrast that can be really appealing. It can also be a form of exploring themes like love that crosses boundaries, whether it's the boundary between life and death or just social differences within the Hogwarts world.
For fun. Writers want to explore the wildest ideas that come to their minds. They take the familiar world of Harry Potter and turn it on its head just to see what would happen.
Well, it could be for shock value. Writers might think that by creating a heartless version of the 'Harry Potter' universe, they can get more attention from readers. For example, if they write a story where Harry is a heartless killer, it's so different from the kind - hearted Harry we know that it might draw in people who are curious about this extreme deviation. Another reason could be that they are tired of the typical 'good always wins' narrative and want to create a more complex and morally ambiguous world.