What is the best?

What happens when you want more kids, but maybe it isnt the right time? Or maybe you do not have the extra money for daycare, formula, and diapers? What do you think? Should you go ahead and have kids even though you know that you can't necessarily afford that extra expense every week? I know you can't wait until you are rich to have kids, but what is the best. I really want another child, but I don't want to hurt my family in the long run. I am at the age where I have to do it now or not ever. What do you think?