I don't buy the "it's good and normal for you; suck it up" perspective. Pain is a useful signal that you're doing something wrong with your body, or that you need to rest to recover and heal. But if you're lying still on your bed recovering from a surgery and are still in pain, what purpose does that serve? It "builds character"? If that makes you happy, go for it, but don't impose that view on the rest of us.