Also, our love grows deeper. As we age, we become more secure in our marriage, family, and friendships. In addition, we become more concerned about others. There's a strong potential for more involvement with community, church, and with social issues. And you become more motivated.
Men reach the happiest stage of their lives in their sixties and women in their seventies.
Finally, we grow smarter. Although we can't change heredity or the fact that we lost some brain cells with age, neither of these facts has much bearing on whether we can improve. The more we expose ourselves to learning, the more the brain grows the necessary connective branches between brain cells to enable us to retain and apply our new knowledge. Given enough time, you'll score better on intelligence tests as you age. The speed of reasoning and remembering may decrease, but not the quality.