Hi, OP, just seeing this now, but if you're still reading, my story might give you hope.
I was never what I would consider "childfree" - I actually assumed when I was younger that I would have children. I babysat a lot as a teenager, and have plenty of nieces and nephews and quite like children.
I had a series of longterm boyfriends from my teens into my mid thirties, but marriage and children always seemed like something for the future.
When I was 34, I met my now-husband at work - he was 28. He was the first person whose company I preferred to being alone, and we both felt quite soon that we'd be together for life. I think we had a very brief conversation early on, where we both said we thought maybe having two children would be good. But we never reached the point where we actually wanted to make it happen, and then at some point, it was too late for me to have children.
When I started going through the menopause, I did have a panicked period when I realised I no longer had the possibility of having a child, but that feeling didn't last beyond perimenopause. Other than that, there was a bit of a lonely period in my thirties when many of my female friends became mothers, and our interests just diverged, but I ended up making new friends.
Because we had good jobs and no children, I was able to retire in my early forties, and he retired a few years later. Since then, we've had a great time! I bought an extremely remote house in Scotland, where we live together most of the time. He spends about a week per month at his house in Devon, which is a nice break for both of us.
The very quiet, peaceful, and independent life I've been able to create is just right for me. I spend my time reading, walking dogs, learning new skills, and just faffing about daydreaming. I have six sisters who were always keen to be mothers, and they all are now, and their lives seem just right for them. I think the key is not to be persuaded into a life that is right for someone else.
So, I wasn't looking for a childfree man and didn't really think of myself as such, but ended up in a marriage where neither of us prioritised having children over spending time with each other. Also, I think looking back at previous boyfriends that if I hadn't met my husband, my second best choice would have been to continue to date but remain single and childless.
Hope some of that is helpful to you!