What is meant by “the life of this world is the enjoyment of delusion”?

One of the most serious, but largely unacknowledged misconceptions, is the supposition that the life of this world is the only real life for human beings. In fact, the world is a temporary place created by Allah to test man. What is real is the life after death. Therefore, everything that charms people and preoccupies them in the fleeting and short-lived existence of this world is an enjoyment of delusion.