Fiction is very good for your subconscious and moral development. However, I think reading the classics is overrated.
A Christmas Carol is probably one of the most impactful works on modern society. Most of us have never read the book, but society now acknowledges that they're happier keeping Tiny Tim alive than bringing their wealth to the grave.
It's like when you put a tomato in soup. The tomato becomes bland but the soup more flavorful. Reading the original is like eating the tomato after eating the soup. The lessons from the classics have permeated society.