> It isn't overpopulated with people like your children will grow up to be. Children in the west benefit from public health measures and educational opportunities that will potentially enable them to be net contributors to solutions for overpopulation. The world can't be overpopulated with geniuses, with enough of them we can make new worlds.
Yes but given that unintelligent people are multiplying themselves at a much faster rate than intelligent people, do you really think your one or two intelligent children will have much of an impact on the world? It's wishful thinking.
But you're not answering the question. How does "one can be happy in the midst of hardship, difficulty and pain" encourage one to have children? One can also be happy when there is no hardship, difficulty and pain...
I mean, if you want the kind of job that can afford the house with the white picket fence and 2.5 children (and not putting yourself into dangerous levels of debt), the level of competition for such a job is fierce.