Perhaps humans have been watching each other for 30,000 years and extracting information from the data. A few have compiled the info and produced wisdom. If we eliminate religions, a new religion will emerge that will be terrible with no Ten Commandments to keep humans from killing, stealing and destroying. Yes, some fiction is more real than reality during the next 24 hours. Like math, good fiction teaches and can be used in thousands of practical situations. Music is powerful and good music can get us into harmony with truth and goodness. Good music can also get humans closer to harmony with God the Creator.
When Christianity and Judaism were knocked down in Germany during 1939-1945, a new secular religion called Naziism arose and destroyed. A similar case study occurred in Russia during 1917-1923 when millions were killed and tortured.