It's totally up to you. There will never be a good time and there will always be trips, hen dos, birthday outings, holidays, festivals. Our three were born when we were in our twenties. I was 27 when we married and we already had 2 kids, a mortgage and jobs in the careers that we're still in. I only missed one hen weekend in all that time, my SIL's and that's because it was too close to my due date, I was at the wedding with my weeks old youngest. My son went to 7 weddings in his first year. And now? Our teenagers come with us to festivals, on trips abroad.
There is no perfect time. I've got lots of friends who chose to do it in their thirties, some in their forties.
Having them younger meant my mum was only 50 when she became a grandparent so she's been really hands on, and my kids grew up knowing their great grandparents.
It slowed down my career earlier than my mates who've had theirs later but I've got a cool job and have always worked in roles and organisations who interested me and mean a lot to what I want to do in the world. This meant I've been a lower earner than most of my school mates but it's evening out now.
As someone else has already mentioned, being a parent isn't just about looking after a baby. That baby becomes a chatty toddler, a busy child, an independent teenager, a young adult and so on. Parenting is for the long haul and those early years are just a chunk of it.
Part of our reason for doing it young was my husband had a baby young before we got together. We were spending our weekends doing toddler things so thought it made more sense to go the whole hog rather than revisit the early years a decade later. I'm so glad that we did that.
There's a lot to be said for having kids at the same time as your friends but I'm really happy to be in my early 40s with older teens and young adults.
Word of warning if you're keen on a summer baby: they won't thank you when they're the only one out of their mates who can't get in the pub. Also, don't get too hung up on it because no one knows how long it will take for it to happen.
So, yeah it is a bit young in the grander scheme of things (I've felt like a baby amongst the parents at some of my older kid's hobbies and sports) but it's the right thing for some people. I get the impression that you're not super keen so it's also totally OK to hold off and wait.