There is an interesting editorial in today's German newspaper FAZ on the decision and the courage it takes in our time to have children. It is from a lady around 30 who reflects the situation when she was a young child compared to the outside pressure on young parents today.
See the full editorial at the FAZ online edition.
But I can assure everyone who is around 30 and wonders whether to have children: go for it, it is the greatest miracle you can imagine. It's sometimes stressful, but always rewarding. Or do you really want to continue as you did in your twenties without children for the rest of your life?