24 is a bit young, but not TOO young.
It depends on the individual. No way would I have been ready for babies at 24. (I was just past 30 when I had mine.) But some women are raring to go as soon as they hit their 20's.
I am in my early 50's now, and mine have left home. (Left for uni and never came back to live at home, though they do live just 20 miles away, so me and DH see them weekly...)
I still feel young and fit, and am active, and have a busy social life. I could never have had babies before my 30's. I just wasn't ready, and wouldn't have coped.
35 is the latest I would have wanted them though...... I couldn't imagine having babies past mid 30's.
Didn't leave myself much of a window did I?! 😬😆😋
But yeah, I had mine at just past 30, and would not change a thing. I had done everything I had wanted by then, I had travelled quite a lot, I was in a good place in my career, and I (and DH) was in a good financial position. And now there are no kids at home, and I am still fit and healthy in my early 50's, and loving life. 
I can't imagine having them at 45 or so and still having school age children at 60!!! 😲😲😲 And if I had a choice, have them at 24, or 44, it would be 24 for sure.