I'm 23. I don't think about such things (not clinically insane).
e: I voted 30-40 because the younger options seem disturbing to me in 2014 and if that dark day should ever come that seems like a reasonable age range. Someone voted 23? What.
I would like to have kids relatively early!
The idea of thinking about having children in your twenties (I don't know what age you are but I'm assuming it's under 23) is literally incomprehensible to me but whatever floats your particular boat.
Re: above - surely celibate priests defeat half the purpose of being a liberal christian? 
The idea of thinking about having children in your twenties (I don't know what age you are but I'm assuming it's under 23) is literally incomprehensible to me but whatever floats your particular boat.
QFT.
But why? Having children is probably the best thing that can happen to someone. And if you have children early, you will have grandchildren early as well. And having grandchildren is probably awesome as well.
(and I'm 19)
Not when your friend's mother's a grandmother at 32 it isn't.
Poll
