According to categories
A lot of people want to write the story of their lives - sometimes for family, sometimes for a wider market
People can be motivated to write tributes and histories about a friend or colleague
Many people want to write up a record of their own family history
People want to write books for children and young people, or sometimes children and young people want to write books
Historical fiction is most often written as a trilogy following several generations in the life of a family.
These can be books written for use in a classroom or can simply be educational in tone.
Christians frequently want to write books: fiction, fantasy, devotional, autobiographical
BriarsBooks does not accept dystopian or occult fantasy but is open to other types
Books of poetry or verse usually arrive in the form of anthologies but can be small personal collections
There are many social issues that people have an opinion about and want to write about
These may be monographs or books that may be purely academic but are more often trying to popularise or simplify a complex subject
These may be commemorative books by organisations or specific to an outdoor hobby, eg., a book on local tramping tracks
People want to write about wellness, recovering from grief, and how to gain and maintain good mental and spiritual health
Books in this category can cover everything from autobiographies of reformed prisoners to campaigns for justice
By people who think they might corner a small market with their range of cullinary experiments