I want to say age doens't matter maturity does, but...
I really do feel that no matter how mature you are you need to experience life and let yourself have messed up boozey nights and make mistakes and be an all round general idiot and child fist before you have your own.
And financial security is a must, thats the first responsibility you have for your child, and it has to be there.
And you have to havce finished school and everything first, because, I know people may hate me for this, I do think that here is a certain class that has the teenage pregnancies, and the majority just have their kids and live off the state, and their kids then become teenage parents and they're stuck in a cycle.
That said, my cousin is 19 and pregant, too young yess, but there was nothing that she wanted to do that a baby would hinder, she was done with school and has a very decent income for her age, has a car and is just moving into her first house. But then again she has been there and done that with all kinds of stupid stuff, so she's not missing out on any kind of life that a 19 year old should have, because she's done it.