Don't fret, mate. Age is relative. Trust me, you'll wake up ome day and think "How I wish I was 72 again". I know I do.
The consolation is that if you had been born a couple of centuries ago or more, you would probably be dead, given the life expectancy of the period. In the Manchester slums of the Industrial Revolution, the average person did well to reach 40 - assuming they survived infancy, which most didn't.
400 years ago, John Milton wrote a sonnet beginning:
"How soon hath Time, the subtle thief of youth
Stol'n on his wing my three-and-twentieth year".
(He felt old at 23)