Here's why:
* Superhuman abilities are inherent to fantasy: Fantasy stories often involve magic, mythical creatures, and worlds that operate by different rules than our own. This naturally lends itself to characters with extraordinary abilities that would be impossible in reality.
* Examples: Think of iconic fantasy heroes like Gandalf (Lord of the Rings), Harry Potter, or Aragorn. They all possess abilities that go beyond human limitations.
* Other genres can feature superhuman characters: While fantasy is the most common, other genres like science fiction and superhero fiction also feature superhuman characters. However, fantasy is the genre where these characters are most central to the plot and theme.
While other genres might occasionally feature superhuman characters, they are not as common or integral to the genre as they are in fantasy.