It's a common saying, for good reason. Anything worth getting, is worth working hard for. That which does not break us, makes us stronger. Pain builds character. While I may have my doubts about that last one (if only because I read it far too often in Calvin and Hobbes,) it's all true. However, we humans are creatures who enjoy our comfort, and pain is looked at with horror and fear. However, what in this life is not painful? And the pain DOES contribute to our growth, whether it be physical pain, emotional pain, or spiritual pain. We shudder, but we get through it, and hopefully come out better for what we have gone through.