Looking young is a great thing! Especially when you get older. When I was 18, an adult friend thought I was 14 years old. When I was working as a bagger in a grocery store, all the other young teens thought I was younger than them, 16 or something. I had to show them my liscense in order to get them to believe I was actually 21 (at the time). Now, in Korea, everyone looks younger than they are. I went to an anime convention and they told me I looked like my friend's mother.....
It's good to see so many young'uns into writing! I'm not going to reveal my actual age, but my oldest daughter just graduated from college! That being said, I don't feel much different than when I was 21, either physically or mentally. A bit less stamina, perhaps. I have wanted to write since I was in elementary school, but as it was not likely to pay the bills, I had to actually get a day job, which set back my writing career a few decades. I am making up for it now.
Not the oldest, but definitely not the youngest. If I had children, they'd probably have children of their own. Had a herniated disk 10 years ago, so I feel your pain, Kate. Literally.
As I get older, I find that history does repeat itself and that people are more alike than they are different. If you suffer from boredom at any point, however, you're doing life wrong. There are always new reflections and combinations of old ideas, if not new ideas.
I'm going to be 21 in November 13th of this year. I want to make this one special for some reason. I look forward to all the cheesecake I always have! :>
I think the term 'whippersnapper' was aged when I was young enough to be classified as one. I never actually heard it used outside of tv though. I think you'll be fine.