What age would you advise your daughter to have children?

[Mog]

There has been so much in the press recently about women leaving it too late and there's a thead on here about young mums getting agro. We can't change our own situations but I wondered what age mners would advise their daughter (fictional or otherwise) to have children?

bad day stitch??
Know the feeling

Late twenties to early thirties, I think.