Seriously, think about what you're saying here. Also, be aware that severe poverty is actually the best reason to have children. If some manage to survive, they're your best chance for care in old age.
Indeed, that's why birthrates tend to be the highest in the most desperate places on Earth. And that's why there's no surer way to reduce the birthrate than to develop social insurance structures that are strong enough and equitable enough for people to feel that they don't need to have lots of children for one or two to survive, and that they won't be utterly dependent on those they do have for care in their dotage.