Age is just a number.
Well so is your bank account. So is your weight. So is your salary. They are all "just" numbers. And they all matter. A LOT.
And unlike age, numbers such as your bank account, your weight, and your salary can improve. Age goes in just one direction; the wrong direction. When someone tells you: "You don't get these years back," HE IS RIGHT.
The next time someone seriously tries to convince you that, "Age is just a number," respond with this far more accurate saying:
An inch of time on the sundial is worth more than a foot of jade.
My tweets are more valuable than youth: https://twitter.com/#!/greatMikePayne