Very similar situation except I had 3 kids. I was really broody when I met my oh and was over the moon when he said he wanted to become a dad at 42. He had none.
It didn't happen despite no clinical identified reasons. We talked about IVF but oh said he really wasn't keen. I was devastated.
12 years later, I thank mother nature every day! For a number if reasons:
Our professional situations changed a lot and became much more stressful.
My kids who's been very easy as children demanded much more and attention than I had expected.
I was diagnosed with a chronic illness, and that and the menopause that hit me like a hammer I really don't know how I'd cope. I barely did as things were.
Although my oh is a wonderful man, loving and caring, he is also very selfish. Years of not having any caring responsibities meant that it would have been very hard for him. I was sure then that he would make a fantastic dad. I thought differently when we got a dog which he wanted just as much, yet expected the dog to fit completely around his schedule. I became the main carer and I could then see how things would have been much the sane with a child. We cooed with a dog, I'm not sure we would have with a child.
We are now in a very good financial position, mortgage paid and can start to count the years to a good early retirement, able to be selfish and enjoy ourselves as we want. This wouldn't be possible with a now 10 years old or less.
I still long for skittle one,but the prospect of becoming a grandma in a few years is so more appealing than going through the teenage years ago!
That's me though, your situation might be completely different.