By itself, this passage is rather powerful. But by truly understanding the context of the work of Jesus, this passage becomes remarkable. Children of God feel pain. We hurt when there is a loss; whether, spiritual or physical. We're sad when others ridicule us or speak ill of us. We're frustrated when we realize that we can't fix the brokenness of mankind. And, yes, we are demoralized when we just don't understand the "why" part of things.
Someone once said that if we, as humans, felt no pain we wouldn't know joy; hence, we couldn't truly live. However, where is true life? Where is the blessings of perserverance? Is it in pain? No - not ultimatley.
Like the penalty of sin so is pain. When the penalty of sin is cast away through true, obedient faith in Jesus Christ, then a person knows peace. When the kindness of God finally removes all of our anguish and pain then we will know real life.
The Lord's humbled . . . John A. Reeves