Wow. It doesn't surprise me at all how many teenagers are on this site. But there are a few "seasoned" vets here, too.
I'm 38, although I often FEEL like I'm 88. I've been through a great deal in my life (crappy marriage, divorce, attempted mugging, attempted robbery at gunpoint, car accident, etc), so there are days when my age doesn't match my body/mind. But there are also days when I wish I was younger, like for my new wife, or my three children (so I can keep up with them!).
Heck, my oldest child is only half of some of your ages!!
Yup. I'm old.