Everything that has happened to me has been amazing and surprising.
Your 40s are a major trough. About the age of 50 feelings of satisfaction begin to rebound and keep rising into your 50s 60s and 70s with health being a major factor.
Old age is far more than white hair wrinkles the feeling that it is too late and the game finished that the stage belongs to the rising generations. The true evil is not the weakening of the body but the indifference of the soul.