What's Neglected in Worship

This morning, Josh turned me on to this article on the tendency of the church to neglect the reality of tragedy as a part of worship, instead turning to a form that gives the impression that the Christian life is all sweetness and light. I wonder if we try to forget the stuff of life in our worship because we really don't trust God to redeem every part of our life, and don't really believe God's heart is good toward us.