I love my daughter, she is, under a general view, a perfect child. I'm a lucky momma, but I completely understand people who don't want children, and that must be respected!
I'm afraid a second may come as 'standard' or worst, and I'll regret my decision hundreds of times.' When people ask me why didn't I had a second child, I always say: 'Look at my daughter. Since newborn she always slept at least 6hours straight, is rarely sick, eats everything we put on her front, likes fish and salad/vegetables, I can count with one hand her child tantrums and she made only 2 in public (now at 14y we have arguments often, but are usually negociated, some days she ends upset but accepts my demands, others I have to give up some minor rules and trust her jugdement), is a great student, well behaved, helps random people she sees in need, and receives appraisal from her teachers and people around.
A friend of mine says: 'Children are the best and the worst we have in our lives.'