Xenia, I absolutely love the idea of you reading NCT leaflets at 14. That is very funny (but I would expect no less of you as you are probably the most goal-focused person I have ever 'met').
I wanted kids from about the age of 28 onwards. Before that I was adamant that I never wanted any at all and was extremely careful with contraception etc. My mother had four pregnancies entirely by accident so I foolishly felt that getting pregnant was probably rather easy. In my late twenties, I began a relationship with someone who was in his early twenties. What with one thing and another, it took until my mid-thirties before he was ready to have children. I found getting pregnant extremely difficult despite no actual fertility issues, have one daughter who I feel incredibly lucky to have, hope for another baby and think I probably won't get one.
I was not 'putting off having children'. In common with many others on this thread, I wanted them from earlier on but was not in a position to get pregnant or indeed to look after those children adequately from a financial point of view, as at that point I was working in just about the most spectacularly unchildfriendly job it is possible to have. Had I had children at 28, I would probably have been pretty much on the breadline. I could not have continued to work in the field I was in without a huge amount of support from family etc (who simply weren't there to offer it).
As to choosing a man in his thirties when you want kids in your twenties, isn't that a rather weird and excessively pragmatic way to behave? Surely you pick the person, not his or her readiness to settle down and procreate? I find the idea of picking a partner purely in order to have children more than a little odd.
I know a lot of women around my age (40) whose partners have delayed and delayed having children until it becomes a real problem, if not with fertility issues then with the relationship itself and many of them were with older men. I don't know anyone, so far, who has not eventually had a child when they desperately wanted one, fortunately, although in some cases it was rather expensive.
I do really hate these articles about how it is all women's fault. I think it is far more about men wanting to prolong the bachelor lifestyle than it is about women wanting to put off motherhood too long.
I must say, if I had my time again, I'd probably not bother with contraception at all after university and have whatever kids turned up at whatever age I was with whoever I was with at the time. I so wish I could have had a big family and as it is I probably can't even give my daughter a brother or sister.