What they failed to teach you at school was that the whole business of being human just got messier and more complicated as you got older. You could tell the truth, be polite, take everyone's feelings into consideration and still have to deal with other people's shit. At nine or ninety.
Once you pass a certain age, life becomes nothing more than a process of continual loss. Things that are important to your life begin to slip out of your grasp, one after another, like a come losing teeth. And the only things that come to take their place are worthless imitations. Your physical strength, your hopes, your dreams, your ideals, your convictions, all meaning, or then again, the people you love: one by one, they fade away. Some announce their departure before they leave, while others just disappear all of a sudden without warning one day. And once you lose them you can never get them back. Your search for replacements never goes well. It’s all very painful – as painful as actually being cut with a knife.