Well, sure, but the people having 8 kids in Sudan probably aren't checking the comments on HN for family planning advice.
So they are probably (well, not probably)... they ARE going to have more kids whether you like it or not.
The question becomes how do we (Western society, which has more resources than we know what to do with) address the issue and try to do good in the world.
> The question becomes how do we (Western society, which has more resources than we know what to do with) address the issue and try to do good in the world
Be involved in how your governments and MNC's behave in these countries. These entities are more likely to pay attention when you, as a voter or customer with more disposable income, say something compared to the citizens of poorer countries who have less of a voice.
So they are probably (well, not probably)... they ARE going to have more kids whether you like it or not.
The question becomes how do we (Western society, which has more resources than we know what to do with) address the issue and try to do good in the world.