I am early 40's and DS1 is 17. (I also have younger dc aged between 16 and 10). Over the last couple of years there have been quite a few pregnancy announcements on facebook, mostly my old school friends children who are a few years older than ds1 getting pregnant but about 4 or 5 of ds1's peers as well. All of them say things like "bit of a shock at our child's age but now looking forward to becoming grandparents" etc. Latest one from ds1's old school friend was one of those ones with a photo of a sleepsuit and a scan photo and "we're so excited, baby Smith coming January 2025" . Which made me suddenly feel ancient. Then we went on an open day for university and I was thinking surely it wasn't that long ago I was doing this with my parents. Ds1 is 18 this week and I'm suddenly realising he is going to be an adult and it's a bit scary how fast it's gone. I wanted to have children relatively early (but we tried for a year to have ds1 so I was a bit older than I thought I would be) and I thought it would make me a young, cool parent. But I feel a lot older than I thought I would. There are some people my age just starting to have children now but I don't know if that would make you feel younger because you still have little ones or older because you are old enough to be your child's granny.