One possible motive could be to create an emotional shock for Harry. It makes him face a difficult situation and tests his moral compass. Another motive might be to force Draco to reveal some important information, with the torturers knowing that Harry's presence would add extra pressure on Draco.
Well, in fanfiction, it could be a way to manipulate Harry's actions. By torturing Draco in front of him, the antagonists might hope to make Harry angry enough to do something rash, like give away his location or a secret. It could also be about power play. Showing that they can harm someone close to Harry (even if Draco and Harry are not exactly friends) is a way to assert dominance over Harry. And perhaps it's a way to break down the barriers between the Gryffindor and Slytherin houses in the context of the fanfiction, by making Harry and Draco share a very intense and life - changing experience.
This kind of scenario in fanfiction often plays on the emotions of the readers. It might make Harry seem more heroic as he could potentially try to stop the torture. On the other hand, it could also show Draco in a more vulnerable light, which is different from his usual haughty self. The fanfiction author might be using this situation to build a bridge between the two characters, who are often on opposite sides in the original series. It could also lead to a whole new arc in the fanfiction where they team up against a common enemy because of this shared traumatic experience.
It could be out of disappointment. If Draco fails to meet Lucius's high expectations in terms of upholding the family's pure - blood status or in his performance at Hogwarts, Lucius might resort to violence as a form of punishment.
Well, Bellatrix is a very complex and cruel character. In the fanfiction context, she might torture Draco to assert her dominance. She is a powerful and deranged Death Eater, and by torturing Draco, she can show that she is in control. Also, it could be related to her pure - blood mania. If she thinks Draco is not living up to the pure - blood standards in some way, she may take it upon herself to 'correct' him through torture.
Maybe it's a form of power play. By taking Harry's glasses, Draco is asserting his dominance. In the wizarding world, status and power are important, and this could be Draco's way of showing that he can take what he wants from Harry, who is often seen as his rival.
One possible motive could be that Draco wants to annoy Harry. Stealing his glasses is a petty way to get under his skin. It's a simple act of mischief that Draco might think is funny. Another reason could be that Draco is jealous of Harry. By taking something so important as his glasses, he feels like he has some power over Harry.
Yes, there might be such fanfictions out there. The Harry Potter fandom is vast, and fans often explore dark and dramatic scenarios in their works. However, these can vary greatly in quality and adherence to the spirit of the original series.
Jealousy could be a big motive. Harry is often the center of attention, and Draco, who is used to being in the spotlight in his own Slytherin circle, might be jealous. So he punishes Harry to try and knock him down a peg or two.
Maybe in some fanfictions, Draco is driven by a sense of self - preservation. He might believe that Harry will eventually turn against him or the Slytherin house. He could think that by killing Harry, he can secure his own place at Hogwarts and in the wizarding community. Additionally, it could be part of a larger plot by Voldemort or his followers. If Draco is forced to join Voldemort's side, he may be given the task of killing Harry to prove his loyalty.
One possible motive could be Severus' complex relationship with Harry's father, James. Maybe Severus feels a deep - seated resentment towards James and by kidnapping Harry, he wants to get some form of revenge on the Potter family. Another motive could be related to the war. He might think that by having Harry in his custody, he can use Harry as a bargaining chip either with Voldemort or the Order of the Phoenix. He could also believe that he can protect Harry better than others, in his own, rather extreme way, thinking that others in the wizarding world are not capable or trustworthy enough to keep Harry safe.
Maybe Dumbledore believes that Harry has some hidden power that is being corrupted by the environment at Hogwarts. So, he kidnaps Harry to a secluded place to train him and help him control this power without any distractions or negative influences from other students or even some of the teachers.