I'm 28--I've been married for 3 years (together for 7), and we have one cat, Pantani, aged 12 (though, I suppose, she's technically my husband's step-cat, since she pre-dates him by several years). Off topic, but interesting, Husband and I started dating on Feb. 26th (First date), then married on another Feb. 26th, which, unrelatedly, also happens to be my cat's birthday.
I live in a college town, which makes you feel much older than you are. Every year, a new group of 17 and 18 year olds comes in, but they keep looking younger and younger. I am told I look young for my age, but I often don't get 'carded' any more when I buy alcohol (due to the large number of real young people here). That makes me feel older than I know I am or know I look.
My mom is 46 and still runs several marathons a year. She looks like she is in her early-thirties. I think that bodes well for me, eh? But this year comes 29, and next, the BIG 3-0. I'm scared about that--nervous to leave the comfort of my twenties, the only decade of my life the whole of which I actually remember. As I creep closer to 30, however, I notice that my self-criticism decreases and my comfort level with myself increases. I'm less self-conscious and more confident. That's very nice. That which I used to spend hours hating and being depressed about no longer phases me.