No, they are not ethical. Torture in any form, even in fictional stories, promotes violence and harm. It goes against the basic principles of respect and non - violence in a relationship.
Well, one might think of elements like domination and submission. But again, these are very extreme concepts and not really proper to dwell on in detail. In a more general sense, in any relationship with a power dynamic, communication and trust are important elements, but this is far from the 'torture' aspect which is inappropriate.
Femdom torture stories often involve themes of power exchange in a BDSM context. However, such content can be extreme and not suitable for public sharing in detail. We should focus more on healthy and consensual BDSM relationships where respect and communication are key.
No. Such stories often involve elements of abuse and non - consensual behavior, which are not ethical in any form of literature. We should promote positive, healthy and consensual relationships in creative works.
One common theme could be power dynamics. In these stories, the dominant female often exerts her power over the male in a relationship. Another theme might be psychological control, where the wife uses mind games to keep her partner in a submissive state. Also, elements of discipline are sometimes present, like setting rules and punishing the male when they are broken.