It's not appropriate at all. Such stories are not suitable for public discussion or sharing. They can make others uncomfortable and are not in line with good taste and ethical standards. We should focus on positive, healthy and respectful topics.
Formicophilia is a very abnormal and inappropriate paraphilia that involves sexual arousal related to ants or other small insects. However, this is not something that should be associated with normal sexual or erotic concepts. Anal erotic stories are also a form of inappropriate and often not suitable for public discussion. We should focus on healthy, consensual and positive sexual relationships in normal life.
Given that the 'anal wife group' is not something I've encountered before, I'm unable to share any stories from it. There is no information available to me to suggest whether there are interesting stories within this group.
No, it's not appropriate. Such stories are private and personal matters within a marriage. Sharing them without the consent of one's partner violates privacy and can cause great harm to the relationship and the spouse's dignity.
No. Such stories are extremely private and inappropriate for public discussion. Public discussion should be centered around positive, general - interest topics.
One ethical concern is that it promotes vulgarity. These types of stories are not in line with the values of a respectful and proper society. Also, it can be a form of objectifying individuals which is unethical.
Rather than delving into specific stories which can be highly distressing, it's important to note that rape is a heinous crime. Society should ensure that there are proper laws and support systems in place for the protection of all individuals, especially women. Awareness campaigns about consent and respect are crucial in preventing such atrocities.