@khleedril It's easy to start with a fantasy story, true.
Writing a generic fantasy plot is simple enough. However, writing a _good_ one is hard.
How easy is it to write a world that is shallow? How easy is it to exhaust yourself in "cool ideas" that never interconnect and fail to come to a satisfying conclusion.
The real world is "hitting the heavy weights" daily, producing astonishing detail, depth, and consequences. To keep pace, our imagination needs training, like any other muscle.