I am done at one child.
Financially, we're strapped. We got married, bought a new house, furnished said house, had a premature babe, bought everything for her, then bought a new car all within 2 years. All.by.ourselves.
Emotionally, I'm spent. I spent so much time in NICU with our girl, then battled PPD silently for 18 months. I have no help, save my amazing husband. Our family is either too old, too far away or too selfish to spend time with our daughter. I'm not sure my relationship could withstand another hormonal upheaval. By the time it does, there will be too much space between our first and our potential second...at the rate we're going.
Our girl is now almost three and toilet training. There is no way I want to go back into the sleepless nights and diaper phase again. She likes being the center of attention and has shown NO interest in babies (though that may change). She wants for nothing, in terms of material goods. She has a good circle of friends in the neighbourhood that are similar in age and I have no fear that she will be lonely in the coming years.
As long as I can provide her with what she needs...a little of what she wants...and ensure she is supported by good people, I feel content with our decision. :)