Sure. And a disproportionate number of them will be needless, avoidable with a modest bit of waiting.
What do you mean by needless? I don't think you understand the reason people are driven to marry. Granted, you may have understood your own reasons, but you haven't gone far enough, to assume that perhaps the same feelings you have may actually exist in a younger subset.
Take me, for example. The single life was slowly killing me. That's how it really felt. A slow war against my immune system was being waged. I was sad and lonely a lot. For a long time. It was taking a physical toll on me. I was not under someone's roof, I was out on my own doing my own thing. And I was, in a way, isolated.
I found somebody like me and it changed me. He restored my health and buffered my sanity from the stress of loneliness. I also felt a drive towards becoming a wife and mother. I felt the pull towards that life was draining me.
I know what it means to be ready for it. The fact that I was 18 didn't change how important marriage was to me. I'm glad it worked out, and that God picked my perfect and true soul mate but I had to try or pay the heavy price of a lonely, miserable life.
It doesn't make sense to suggest they can't have them at twenty five. And less sense to have them when you're mostly assuring they'll grow up in broken homes.
I'm glad my husband was born, even though the young marriage that made him fizzled all too soon. I don't think of that union as any kind of mistake or burden on society.
I don't see how that impacts the here and now and what's demonstrably best, both for people and for kids. And what doesn't tend to be significantly more often than not.
I think we know that isolation is a big emotional risk factor for young people and for some it's harder to avoid than for others. What is good for one person with one personality is not going to work out for others. Individualism allows everyone a fair chance to consider what's right for them and choose.
Which wouldn't be jeopardized by waiting until your mid twenties.
It's a lot harder to have 12 kids when you wait until your mid-twenties to start trying. So if you want to have a lot of kids then the sooner you can start the better. And for some women their fertility and/or health may be needlessly jeopardized by waiting. Everyone isn't exactly the same.
But they aren't, either marrying for or providing a good given what I've related above.
But in the example of myself, I was providing a good. The children I had in my late teens and early twenties are very important to me and everyone in their lives. I am still having children, and the goal, for me, is to have as many children as God sees fit to give me in my good health with my willing husband. I wouldn't want to cut off blessings by waiting and not having my first 4 children.
And the good it does (other than the children) is preventing an evil, namely the cruel misery of artificially imposed isolation via arbitrary one-size-fits all standards.
It's not the State's job to tweak divorce rates.