Is It Just Ima-gene-ary?

It's a little fitting that I have a Peter Pan obsession since I'm often told I look younger than I actually am. I've been presumed as much as 5 to 10 years less than my age. Sometimes I have to keep insisting due to disbelief.
Well, apparently, they now think they might know the cause. And it's science.

It's been dubbed the "Peter Pan Gene" which seems to control the rate at which people age. There's another gene that has to do with getting older. Some people have two of it, some one... and others are lucky enough to not have it at all, but instead this "youthful" gene... or maybe even two of it!

Supposedly this could lead to isolation of the inner workings of the gene and then on to drugs that can help turn back or halt the clock.

A little scary.

The article I read: Looking young for your age?

Age Old Question?

When people in our set are introduced, it is customary for them to ask each other’s age, and so Wendy, who always liked to do the correct thing, asked Peter how old he was. It was not really a happy question to ask him; it was like an examination paper that asks grammar, when what you want to be asked is Kings of England.

“I don’t know,” he replied uneasily, “but I am quite young.”
- Peter and Wendy, J.M. Barrie

Here's a (not so) simple question for you:
If you didn't know your age, how old would you be?
Not how old would you like to be...how old do you feel/think you are?

For many years I figured I'd remain 17. But now I imagine I'm about 22.

Time is funny. College went by in a blink but it took forever to do so.
And it ended about five years ago. (But it's really been 15.)