I am 27. Until I was about 23 I was certain I didn't want children. After then I started thinking that I probably would have children if I were to marry a man who wanted them, mostly because it seemed like the 'done thing,' only with a man who would be happy to take on at least half the childcare. My mother and friends have always said I would one day feel the biological urge to have children - I haven't yet, and feel far too young to consider it. I have plans which don't involve children, but a stable and well-paid job, so could support them if necessary.
I've never been around children, am an only child with a small older family, and have always been very focussed on my career and hobbies, learning, and travelling. I don't really like babies though I am ok with my friends', and I like children from the age of about seven upwards.
I'm now dating someone who seems pretty much perfect. He has made it clear he doesn't want children. I haven't said anything either way to him but I think he will ask outright soon.
I don't think I do but I can't be certain I won't regret that decision. Did you always know, 100%, that you wanted children?