What is the beauty in growing old?

In the song "Get It Together" by India Aire, she says "You'll never be happy and you'll never be whole until you find the beauty in growing old."

I think one of the beautiful things about growing old is growth as an individual. Constantly renewing yourself and continuously becoming a different better person. Improvement that can only be received by age. Getting to a point where your skin, health, and physical ability may not be the same as it was years ago but you can still ask yourself "What do I have?" and think of so many answers.

What do you think the beauty is in growing old?