The young can exasperate, of course, and frighten, and condescend, and insult, and cut you with their still unrounded edges. But they can also drag you, as you protest and scold and try to pull away, right up to the window of the future, and even push you through.
That is why we have to make room in our lives for people who may sometimes disappoint or exasperate us. If we hold our friends to a standard of perfection, or if they do that to us, we will end up far lonelier than we want to be.