From Contagious Christian Living by Joel Beeke, p. 85:
If God doesn’t leave his mark on you, you will not be blessed with lasting profit from your afflictions. We must learn to welcome both pain and progress in our walk with God, realizing that we learn more through affliction than prosperity. Both are part of the contagious price of God, for he is most worthy to fit us for service in this life and the life to come.
I think we can agree we have learned more through pain than prosperity.
Justin Taylor shared the story of a family experiencing deep pain yesterday: their 12-year-old son died in an accident. If you have not seen it, please take a minute to read, cry and ask God for that kind of sustaining faith.