Maybe the writer wants to explore gender - bending themes. It could be a way to break the traditional gender norms associated with the character. By giving Damon this unexpected physical trait, they might be aiming to see how the character and the story would develop in a completely different context.
The motivation could be a desire for extreme creativity. Fanfiction writers often like to push boundaries. In this case, giving Damon a vagina could be a way to shock the readers and make them think about the character in a new light. It might also be a way to explore how Damon's personality, which is often associated with his male identity in the show, would be affected. Perhaps the writer is interested in seeing how Damon's relationships, his sense of self, and his place in the Vampire Diaries world would be different if he had a different biological makeup.
It is an extremely odd concept. The Vampire Diaries has a certain set of character traits and identities. Damon is a male vampire with his own charm, flaws, and storylines that are based on his male identity. In fanfiction, when something like this is introduced, it not only changes Damon but also can disrupt the entire fabric of the story. For example, his relationships with other characters like Elena or Stefan would be completely re - imagined in a way that might not be in line with the essence of the original show.
One great Damon and Jeremy fanfiction is 'The Bond Beyond Blood'. It delves into how Jeremy, after his experiences in Mystic Falls, starts to see Damon in a new light. Their relationship evolves from one of distrust to a sort of begrudging respect and then to an unexpected friendship. The story is full of action and the typical Vampire Diaries drama.
One possible motive could be protection. Maybe Damon senses a danger approaching the reader and biting them is his way of marking them as under his protection. In the vampire world, a bite can be a sign of claiming someone.
The writing style also matters. A good fanfiction uses vivid descriptions to bring the Vampire Diaries world to life. It makes you feel like you're in Mystic Falls. The dialogues should be snappy and true to the way the characters speak in the show. Also, a good fanfiction doesn't deviate too much from the established lore of the Vampire Diaries unless it has a really good reason to do so.
One common theme is redemption. Damon has a lot of past wrongs, and in many fanfictions, Bonnie plays a role in his journey towards redemption. For example, she might make him face the consequences of his actions in a more empathetic way.
Love. It's often a reason. Maybe he's being tortured because someone wants to get back at him for hurting their loved one. For example, if he broke a girl's heart who has a powerful father or brother, they might torture him to avenge her pain.
A theme that is often explored is the idea of sacrifice. In many fanfictions, either Damon or Caroline has to sacrifice something - it could be their own desires, safety, or relationships with other characters - for the sake of the other. This theme adds depth to their relationship and shows the extent of their love and loyalty towards each other.
One common theme is the idea of an unlikely friendship. Since they have different personalities in the show, fanfictions often explore how they can form a deep bond. Another theme is adventure. They are usually thrown into some sort of dangerous or mysterious situation together.
One great fanfiction is 'Damon's Redemption'. In this story, the reader character enters Damon's world and slowly changes his perspective. It's filled with intense emotions and some really well - written dialogues that stay true to the characters' personalities from the show.
One common theme is rivalry turned friendship. They start off as enemies but over time, in many fanfics, they learn to respect and even rely on each other.