I know 60 is the new 20 or something like that, but there's also a cultural inclination to start "feeling old" in one's fourth decade of life. I think this is when we're supposed to start worrying about wrinkles and gray hair and whatever other horrible things are out there in Oldlandia.
Well, I don't feel old. This here decade appears more than adequately longitudinous, and the one after that (DV) is . . . well, we just don't talk about that. Wrinkles and gray hairs are the least of my worries*. I feel young, young, young.
No wrinkles here!
*However, I spoke with a friend who, finding herself pregnant in the unspeakable decade, was unable to find suitable maternity clothes. Where, she wanted to know, were the maternity clothes for grandmas?