They are extremely rare in literature. The concept is so far from the usual themes of family, commitment, and respect in a marriage that are often explored. Writers usually aim to portray healthy or at least relatable relationship models, and this scenario is not something that easily fits into that framework.
While such a situation is extremely unethical and illegal in most contexts, it is very rare to find real - life examples of this in a positive light. In a normal, healthy relationship, this behavior goes against moral and legal norms. However, in some very extreme and dysfunctional fictional stories, it might be depicted, but it's not something to be emulated or desired in real life.
One story could be that the husband found out his wife was cheating. Instead of getting violent, he quietly gathered evidence. Then he exposed her affair to their families and friends, which led to her being ostracized in their social circle.
Well, in some fictional tales, it could be a result of a complex psychological dynamic. The husband might have some sort of fetish or abnormal desire that the wife is trying to fulfill out of love (in the context of the fictional story, of course). Or perhaps the story is set in a post - apocalyptic or lawless world where the normal rules of society don't apply. In such a world, they might see this as a way to gain an advantage, like getting resources or protection. But again, these are all fictional and not the kind of behavior we should promote or expect in real - life relationships.
One possible motive could be a sense of inadequacy. The wife might feel that she can't fulfill some specific desires of her husband sexually, so she arranges for a hooker. Another could be a strange form of self - sacrifice, where she puts her husband's needs above her own feelings of jealousy or propriety.
There may be some works that touch on such themes in a more complex and often cautionary way. For example, in some novels that explore the seedy underbelly of society, a character might have a past related to prostitution. But these are not to be glorified.
There may be some in certain works that aim to explore complex human nature and social issues. But such stories are often controversial. For example, in some classic novels, the author might use such characters to show the contrast between different social classes and moral concepts. However, most of today's literature focuses more on positive and healthy relationships.
The term 'training the wife like a hooker' is inappropriate and objectifies women. We should promote healthy, equal and respectful relationships, not such demeaning concepts, so there are no positive stories in this regard.
There are no positive interpretations. The phrase combines two very negative and inappropriate ideas. A wife is a person with her own rights, dignity and identity. Any form of 'training' in this context is unacceptable. We should strive for relationships that are based on positive values like kindness, compassion and equality.