It's interesting, but I can't see myself as old. Sure, I know I'm getting older, as that is inevitable, but I guess I just don't "feel" old. I'm almost 37, but that means I likely have more than as long as I've lived left to live, if all goes well.
I run, I work out, I eat reasonably well, and I have young kids, so that helps me remain young. My wife is older than me, so I also have that comparison going for me.
In the end, I think if you feel old you are old. What's a few wrinkles or an occasional snap-crackle-pop in the knees, really?
And what's so bad about being older? Lord knows I wouldn't want to go back to being a teen-ager, or really even in my 20's again. My life is stable, I have a lot of friends, I have a good life with a great family, and I can actually afford to do the things I would have liked to have done in my 20's.
Now turn that music down and shut off the TV, I've got crosswords to do.