They exist to show different sides of the characters. Maybe the author wants to explore how Harry, who is seen as a hero, can also make mistakes in his personal relationships. And Ginny, who is strong - willed, how she reacts when hurt by someone she loves. It gives more depth to both characters.
Another reason could be to appeal to readers who like angsty stories. These fanfics create emotional turmoil and tension. By having Harry hurt Ginny, it sets up a situation where there are broken hearts, misunderstandings, and the possibility of redemption or further breakdown, which can be very engaging for those who enjoy this type of emotional roller - coaster in their reading.
Some 'Harry Hurts Ginny' fanfics exist because it adds a new layer of drama to their relationship. Their relationship in the original series was mostly positive, but exploring the negative aspects like Harry hurting Ginny can make for an interesting and complex story.
Well, 'When Harry Fails Ginny' is another one. In this fanfic, Harry's neglect due to his preoccupation with other matters makes Ginny feel unwanted and hurt. It's a story that focuses on their communication breakdown and the journey to repair what has been damaged.
Well, some authors might want to explore different character arcs. By having Ginny dump Harry, they can show Ginny as a strong - willed character who is not afraid to make tough decisions. It also adds drama to the story, as the relationship between Ginny and Harry is a central part of the Harry Potter universe.
Some exist because fans like to explore different power dynamics in relationships. They want to see how Harry, as a central and powerful character, can influence Ginny's actions and decisions.
For the sake of creating drama. Lies can easily stir up emotions and conflicts, which makes for an interesting plot. It keeps the readers on their toes, wondering when the truth will come out and how Harry will react.
One possible fanfic could be 'The Broken Trust' where Ginny's actions, perhaps due to a misunderstanding or being under some sort of dark influence, end up hurting Harry. It might explore how their relationship deteriorates and the emotional turmoil Harry goes through.
One common theme is miscommunication. Ginny might say or do something that Harry misinterprets, leading to him being hurt. For instance, if she makes a comment about his past adventures in a wrong way, it could make Harry feel like she doesn't understand or respect him.
Some 'Hermione breaks Harry' fanfics exist because it offers a new and different take on their relationship. The traditional view of their friendship is so strong that exploring a break in it creates a lot of drama and emotional tension, which is interesting for readers.
One reason could be for the sake of character exploration. Writers want to see how Harry would develop if he embraced different, often 'feminine' qualities. It adds a new dimension to his character.
Some writers might be exploring the darker side of human nature. Gale is a complex character. He has his own desires and goals. In the context of the story, his actions could be misinterpreted or could genuinely cause harm to Katniss. Fanfiction allows for a deeper dive into these possible scenarios, showing how even a character like Gale, who has good intentions at times, can still end up hurting the person he cares about.
They exist because it creates drama. The relationship between Clary and Alec in the original story has a lot of potential for conflict. Writers explore different scenarios where Clary might hurt Alec, either intentionally or not, to add more depth and angst to the story.