I seriously don't feel that old, but then I remember I graduated from high school 25 years ago.
DH & I have been married for 21 years.
DD is 16. 16!! I distinctly remember being 16.
DD is 16, & our older DS is almost 15. Mine & DH's ages pretty much fit in w/ other parents who have kids those ages. However, our younger DS is almost 7, & we're quite a bit older than his friends' parents.
My niece has a little boy, so I'm a great aunt. And we have some friends who are already grandparents.
DH was a youth group pastor for many years, & now all of the teenagers that were in our youth group are married w/ kids of their own.
What really makes me feel "old" though is watching my parents & DH's parents get older & frailer & coming to the knowledge we are now the "middle" generation.
Oh, & we went to our local amusement park last month, & I quickly found out that I can't ride the spinning rides any more like I used to. Years ago, I could ride upside down & round & round over & over again. I'm so sad I can't do that any more!!
And music! The other night, DH & I played some old Bon Jovi songs for the kids, &, before I could stop myself, I said, "They just don't make good music like this any more."
Realizing the current trendy celebrities & athletes are younger than I am & that the "stars" from my day are really kinda old can make me feel older too. When "Star Wars: The Force Awakens" came out, I was like, "No way can Harrison Ford be that old!"