Granted I'm all-ways amazed that in the West on one hand the news proclaim and medical professionals to have children when the women are in there 20's. Although the support and service's such as cheap day-care and family centered activities are completely lacking to support that mind-set.
The message most young people receive is `It is healthy to have children when you're younger`. The reality is `Yes you can, but I hope you like living in a studio apartment counting your monies well all your colleges/friends are having fun`.
That and in today modern world having a child in your 20's is more or less considered social suicide.
The only to maintain a life-style and support structure for young women would be to find a partner who can support them and their child well at the same time maintaining their quality of life. Something such partners are very small so there is a lot of competition for this type of partner.