I'm 23 this year and pregnant with my first, I'm from the north west and a vast majority of my school friends are already parents. One friend who is 25 this year is trying for her first. Having children in my 20s has always been what I intended to do, its just not the done thing in my area, family or social group to wait longer than that. This goes for the women with careers aswell, most people I know have attained their career by this point anyway. I did loads of partying from 16-21, I was well and truly sick of it by then. Many women I know became parents in their teens.
I always find it odd so many women online etc say its so hard to find a man younger than 40 that wants kids...really? I'm sure the socio-economic status/type of man they are looking to attract/dating (likely one who is financially sorted and career/lifestyle minded, not family orientated) is the problem. I find working class men are far keener to settle down than middle/upper class men. You can't have everything, sometimes its best to forget about having a high earning career man as your partner as these are the type who generally want to live the single life for much longer and think about someone with a little less money and social standing. To me the most important thing in a partner is them being committed, family orientated and down to earth, not that they have a fantastic job and lots of economic opportunities...these men in general do not want to settle down early and who can blame them?
From my personal point of view, I see no point in waiting around if you know categorically it would be hell on earth for you to never have a family. If never having children is a risk your willing to take to put settling down off, then thats fine. I saw it as a huge risk and never having atleast 2 children would be very upsetting for me, like it or not in your 20s you are at your most attractive thus have the best chance of attracting a partner of your standards. I would start looking for husband/father material by my late 20s atleast. Obviously many ladies are beautiful 35+ but in general its not the ideal age range for men seeking women to have children with, they are not at their most fertile or attractive. This is something I've merely heard said by many men by the way, its not a personal dig from me!
Its well known many women have trouble getting a serious relationship at this age where he wants kids and its not uncommon for men to leave older women for a woman 10 years younger when he finally does want children.
At the end of the day its all about balance to me, I also know a woman (MIL!) who is pushing 60 now and never did anything with her life except have children from being 16, no career, no nothing, just had lots of children and drank alcohol her whole life. She is now extremely lost, having a mental breakdown and cannot cope with the fact her adult children have all grown up now and do not want or need her control and interference anymore. She has never had anything else to focus on in her life and I definately do not want to be in her shoes, she is a lonely, miserable battleaxe with terrible empty nest syndrome. I want (if I am lucky!) 3/4 children and then to work on my career, my DM had all hers in her 20s and now at 45 has the career she always wanted, own house, car and can go and do as she pleases. That is what I want, plus I'd feel very left out of my social circle if I waited till 35 to have children, no other women I know wait so long and I'd probably have little in common with older mothers as most seem to be from a different social class to me.