Most of the time, they are not. Good literature is about human nature, relationships, and social phenomena in a positive and educational way, not about sexual seduction in a vulgar sense. However, in some very specific literary works that are exploring certain complex human psychologies in a more academic and profound way, they might be used in a very restricted and carefully crafted manner, but still with a lot of ethical considerations.
This is completely unacceptable behavior. Blackmailing your mom for sex stories violates basic principles of respect, privacy, and family loyalty. It's not just about the inappropriateness of the content, but the act of blackmail itself is a form of manipulation that can have long - lasting negative effects on your family relationships and your own moral standing.
This is clearly an unethical situation. Having sexual relations with a friend's mother violates basic moral and ethical boundaries in most societies. It can cause great harm to the friendship, family relationships, and the people involved emotionally.
Such a question is not appropriate or acceptable. Engaging in or discussing content related to inappropriate or disrespectful behavior within family relationships is not something that should be entertained.
Another theme could be teaching values. A mom may use her charm and wisdom to'seduce' her children into understanding the importance of honesty, kindness, and hard work. She might tell stories or lead by example to instill these values.
Seduce mom stories are inappropriate and go against moral and ethical norms, so there are no positive moral lessons in them. Incestuous themes are unacceptable in society.
There are many other wonderful types of stories in literature, like adventure stories or historical tales, which are much more worthy of our attention.
Literature typically promotes positive and ethical values. A 'mom seduce story' goes against these norms. Instead, we have stories like in 'Little Women' where the mother figure imparts important life lessons and love to her daughters, which is the kind of story that is common and valued in literature.