I think that age as a number is not nearly as important as health. You can be in poor health and be pretty miserable at 40 or 50. If you're in good health you can enjoy things into your 80s.
Old age is like everything else. To make a success of it you've got to start young.
Leave it as it is. The ages have been at work on it and man can only mar it.
The two most misused words in the entire English vocabulary are love and...