The book of Ecclesiastes powerfully conveys the meaninglessness of life without God.
Should you read the book when you're down in order to find someone who can join you in your misery? Is there anything uplifting in it? There are some who have thought the book doesn't belong in the Bible at all.
... Encountering Ecclesiastes: A Book for Our Time. Grand Rapids: Eerdmans. Loader, James A. 1986 Ecclesiastes: A Practical Commentary. Translated by John Vriend. Grand Rapids: Eerdmans. Loewen, Howard John, ed. 1985 One Lord, One Church ...