Fictional works of literature definitely provide more emotional fulfillment than works of non-fiction. Basic brain functions of perception and abstraction are brought to their extreme values in works of fiction.
Fictional works provide storyline and content based on imaginative plot, may be based on real historical events, however represent higher abstraction and speculation than researched non-fiction work.
I personally find fulfilling works of archeological mystery, thriller, historical fiction, high or urban fantasy, where I have real world events or places represented under alternative view.
Per WP: Fiction generally is a narrative form, in any medium, consisting of people, events, or places that are imaginary—in other words, not based strictly on history or fact.
Fictional works that explicitly involve supernatural, magical, or scientifically impossible elements are often classified under the genre of fantasy.
Literary fiction is a term used in the book-trade to distinguish novels that are regarded as having literary merit, from most commercial or “genre” fiction.
Realistic fiction typically involves a story whose basic setting (time and location in the world) is real and whose events could feasibly happen in a real-world setting; non-realistic fiction involves a story where the opposite is the case, often being set in an entirely imaginary universe, an alternative history of the world other than that currently understood as true, or some other non-existent location or time-period, sometimes even presenting impossible technology or defiance of the currently understood laws of nature. However, all types of fiction arguably invite their audience to explore real ideas, issues, or possibilities in an otherwise imaginary setting or using what is understood about reality to mentally construct something similar to reality, though still distinct from it.
The following are some of the main genres as they are used in contemporary publishing:
Main articles: Crime fiction and Detective fiction
Crime fiction is the literary genre that fictionalises crimes, their detection, criminals, and their motives. It is usually distinguished from mainstream fiction and other genres such as historical fiction or science fiction, but the boundaries are indistinct. Crime fiction has multiple subgenres, including detective fiction (such as the whodunit), courtroom drama, hard-boiled fiction, mystery fiction, and legal thrillers. Suspense and mystery are key elements to the genre.
Main articles: Fantasy, History of fantasy, and Fantasy literature
Fantasy is a genre of fiction that uses magic or other supernatural elements as a main plot element, theme, or setting. Many works within the genre take place in imaginary worlds where magic and magical creatures are common. Fantasy is generally distinguished from the genres of science fiction and horror by the expectation that it steers clear of scientific and macabre themes, respectively, though there is a great deal of overlap among the three, all of which are subgenres of speculative fiction. Fantasy works frequently feature a medieval setting.
Main article: Romance novel
The romance novel or “romantic novel” primarily focuses on the relationship and romantic love between two people, and must have an “emotionally satisfying and optimistic ending.” There are many subgenres of the romance novel including fantasy, historical, science fiction, same sex romantic fiction, and paranormal fiction.
There is a literary fiction form of romance, which Walter Scott defined as “a fictitious narrative in prose or verse; the interest of which turns upon marvellous and uncommon incidents”.
According to Romance Writers of America‘s data, the most popular subgenres are: Romantic suspense, Contemporary romance, Historical romance, Erotic romance, Paranormal romance, Young adult romance, and Christian romance.
Main article: Science fiction
Science fiction is a genre of speculative fiction dealing with imaginative concepts such as futuristic science and technology, space travel, time travel, faster than light travel, parallel universes and extraterrestrial life. Science fiction often explores the potential consequences of scientific and other innovations, and has been called a “literature of ideas”. It usually eschews the supernatural, and unlike the related genre of fantasy, historically science fiction stories were intended to have at least pretense of science-based fact or theory at the time the story was created, but this connection has become tenuous or non-existent in much of science fiction.
Main article: Inspirational fiction
Inspirational fiction has faith-based themes, which may overlap with Philosophical fiction or Theological fiction. It may be targeted at a specific demographic, such as Christians. Modern inspirational fiction has grown to encompass non-traditional subgenres, such as inspirational thrillers.
Main article: Horror fiction
Horror fiction aims to frighten or disgust its readers. Although many horror novels feature supernatural phenomena or monsters, it is not required. Early horror took much inspiration from Romanticism and Gothic fiction. Modern horror, such as cosmic horror and splatterpunk, tends to be less melodramatic and more explicit. Horror is often mixed with other genres.