The hypothesis is advanced that the early 50s is women's prime of life, an androgynous time of good health combined with autonomy and relational security.

At life’s midpoint, most adults are wealthier and more economically secure than at any other time. On average, you will reach your sexual peak in your 20s, your physical peak in your 30s, your mental peak in your 40s and 50s and at will be at your happiest and relaxed in your 60s. In fact, middle age is life's prime, truly. Do you ever worry that the prime of your life has already passed you by – and it didn’t even have the courtesy to let you know as it flew overhead? According to a recent survey by U.S. Trust, those born between 1981 and 1996 believe “old age” kicks in at 59 years old, a mere 19 years after they say youth ends.

Really though, the most important message is life is a series of ups and downs, peaks and troughs.