In such stories, wives might turn into crackhead whores because of a combination of factors. It could be a lack of support, financial difficulties, or even a desire for an escape from reality that leads them down this path.
Often, it could be due to severe addiction problems or bad influences in their environment.
Well, there can be various reasons. Maybe it's a result of intense stress, a series of bad life choices, or getting mixed up with the wrong crowd. Sometimes, it might even be depicted as a form of escape from a traumatic past.