I never enjoyed reading fiction. Fiction trains your mind to look for fictitious narratives in real life; it distorts your perception of life and makes the world a worse place for others who don't follow those narratives.
But good fiction is also one of the most effective ways--apart from deep listening--of training empathy because it lets you step into someone's inner life. Rarely do we get a chance to see the world through someone else's eyes for long stretches.
If you're not an immigrant, you can vicariously live the life of one through fiction and see what they have to deal with.
If you're not a news reporter or a cop or a tycoon during the Great Depression, you can tag along with one through fiction.
The point of reading fiction isn't about content, but how they change you as a person.
Just making it up without adapting from anything real usually isn't something that good fiction is built up from, though. That path goes directly to cliche, and it's easy to find cliched fiction.
Anecdotally, of course.
Good fiction trains your mind to understand different world-views and other peoples' narratives of themselves and the world (as opposed to satisfying yourself with your own narrative as the "objective truth").
I also find that there is deeper meaning in analyzing fiction as to how its mythologies can be applied to personal growth and the journey towards it. I recommend reading Joseph Campbell's The Hero with a Thousand Faces to help engender this critical view of thought when thinking about the templating of fiction.
(see what I did?)
What is fiction? How is it different from philosophy? What about soft sciences like sociology or psychology that rely heavily on trying to interpret human behavior (presumably based on their warped, distorted brains). What about theology? How about art as a whole? Or music?
Are you trying to propose that ENTIRE world would be better if there were no fictional creations?
IDK my dude, this seems like a pretty extreme and indefensible position...