This prompted me to check how long ago I was 13 years old.
It was 26 years ago.
Are we old yet?
"Old" is a state of mind. If you find yourself believing that everything new is terrible and you want to go back to "the good old days," then yeah, you're old. If you're still open to learning new things and adapting to and exploring the world as it changes around you, then you're not old yet.
I, too, was 13 some 27 years ago. Coincidentally so were many of my friends!