Your parents are never old, until they suddenly are. They fall down and get injured. They don't have the energy to go up the stairs in their own home. They can't cook your favorite dish on your birthday. Suddenly it hits you; they're elderly and you've been treating them like they're still the dark-haired workhorses from your childhood. You finally take a moment to think back and you see the signs of their deteriorating health. A stumble here. A fainting spell there. A cut or bruise that takes forever to heal. But it was no big deal because your parents have always been strong. They've never slowed down for anything.