I've said it before and I'll say it again, anyone who had kids does it for selfish reasons.
Other then I would put the word 'deliberately' in between the words 'who' and 'had'. If you are impregnated as the result of rape - that maybe a different story. Not sure though.
But otherwise I agree 100% and think that most of the world's problems emanate from that one sentence of yours. People usually have children simply because they want them. To create a human being simply for your own pleasure is just about the most selfish, legal thing I can think of doing.
As for China? Although China surely realized that many girls were going to be killed so that the families can have boys; I think it was a good rule. They should have just made the penalty for killing a girl allot harsher.
But now that China is prospering so quickly, I am guessing the need to have a male child will diminish as the countries wealth increases.
One thing that will probably happen though (as I first read about in an article by Gwynne Dyer) is that as these boys grow up there will be a distinct lack of female partners available. And that means one thing - importing women from poorer countries to China. It is inevitable. And apparently China is not big on foreigners. So like it or not, China is going to get a lot more diverse in about 20 years time. And puritan Chinese officials will regret their lack of legislation to protect the lives of all those dead Chinese girls.
Another great thread, IMO; AFA.