It's a bit of a paradox. Things are bad in the world, very bad, and the future looks grim. The country slides, the ship of state, 'manned' by fools, lists, and the center will not hold. But I've never been happier! I am sure my experience is not unique. I expect many of you who have entered the country of old age will resonate to at least some of the following.
You now have money enough and time enough. The time left is shrinking, but it is your own. There is little left to prove. What needed proving has been proven by now or will forever remain unproved. And now it doesn't much matter one way or the other.
You are free to be yourself and live beyond comparisons with others. You can enjoy the social without being oppressed by it. You understand the child's fathership of the man, and in some measure are able to undo it. You have survived those who would define you, and now you define yourself. And all of this without rancour or resentment. Defiant self-assertion gives way to benign indifference, Angst to Gelassenheit.
You now either enjoy the benefits of a thick skin or else it was never in the cards that you should develop one. You have been inoculated by experience against the illusions of life. Unrealistic expectations and foolish ambitions are a thing of the past. You know that the Rousseauean transports induced by a chance encounter with a charming member of the opposite sex do not presage the presence of the Absolute in human form. Less likely to be made a fool of in love, you are more likely to see sisters and brothers in sexual others.
The Grim Reaper is gaining on you but you now realize that he is Janus-faced: he is also a Benign Releaser. Your life is mostly over, but what the past lacks in presentness it gains in length and necessity. What you had, though logically contingent, now glistens in the light of that medieval modality necessitas per accidens: it is all there, accessible to memory as long as memory holds out, and no one can take it from you.
What is over is over, but it has been. The country of the past is a realm of being inaccessible except to memory but in compensation unalterable. Kierkegaard's fiftieth year never was, yours was. Better has-been than never-was. Not much by way of compensation, perhaps, but one takes what one can get.
You know your own character by now and can take satisfaction in possessing a good one if that is what experience has disclosed.