Nothing on earth can satisfy the longing of man but God created the heart of man in such a way that he can not find life's fulfilment outside Him. As the shell, brought home from the seashore and placed on the shelf would sigh for the ocean from where it was brought, so is the heart of man.
The inspired writer emphatically warns that loving the world and all the things of the world is diametrically opposed to loving God. What then is "the world"? By " the world" we mean its fashions, systems and customs. Chrisworld ar are commanded not to conform to the world (John 15:19) to be the light thereof and to show the right lifestyle that God expects of man on earth. They are to be crucified to the world and all its allurements and live soberly and unspotted throughout their short period of stay on earth.
King Solomon, who was called Jedidiah or the beloved of Jehovah (2samuel 12:24,25), drifted away from God as a result of hisbquest for earthly pleasures. He tried knowledge in merriments and amusements which today could be likened to all types of indoor and outdoor games, watching funny and unedifying programs on the television screen or the internet and indulgence in luxurious living, but he ended up saying "all is vanity" .
If a man like Solomon, with the great wisdom of God, could not derive satisfaction from the vast things of this world are both transient and deceitful.