No, it is not appropriate. Such content involves vulgar and pornographic elements which go against moral and ethical standards in most societies. It is not acceptable to promote or create such materials.
There are many positive story topics. For example, stories about family adventures during vacations. It could be a family going camping, facing challenges together like setting up the tent in a windy situation, and then enjoying the beauty of nature around the campsite. This kind of story promotes family bonding and positive values.
In most cases, they are not appropriate. Mainstream literature typically aims to promote positive values, and these kinds of stories with their often explicit and unethical overtones go against that. For example, they can objectify and disrespect relationships, which is not what we want to encourage in a general reading public.
Ancient mythology mainly focuses on gods, heroes, and the creation of the world. There is no place for such vulgar themes as 'big dick cuckold stories'. Mythology is about explaining natural phenomena, cultural values, and the origin of things in a more solemn and meaningful way.
No. Such stories involve inappropriate and often vulgar sexual content, which is not suitable for public discussion as it goes against public moral and ethical standards.
Stories about couples going on adventures together can be great. For example, a couple exploring different countries, experiencing new cultures and creating beautiful memories along the way.