The Book of Ecclesiastes expresses the uselessness of life after having tried everything there is to life. It may seem a bit melancholy or pessimistic but we tend to take for granted what the Lord brings to our lives daily. We don't admire or appreciate what he has purposedly allowed us to explore and experience in life. Everything has a meaning and significance in our life. For daily God puts us in a position to be used by Him, to admire Him, and to represent the beauty of Christ to others through nature or by our doings.