What makes art in general, and literature in particular, remarkable, what distinguishes them from life, is precisely that they abhor repetition. In everyday life, you can tell the same joke thrice and, thrice getting a laugh, become the life of the party. In art, though, this sort of conduct is called 'cliche.'
To most of us, adulthood means being able to earn a living, possess a home, get married and rear children, and this implies having autonomy or control over one's life. In the 19th century, becoming an adult was celebrated as a liberation from paternal authority. Today we regard it more as a time of regret and stagnation.