I think that worrying about how to pump more people onto a planet that is already dying an early death because of human activity is like worrying about how to arrange the deck chairs on the Titanic. Our time might be better spent trying to figure out how to clothe, feed, shelter and educate the people who are already here. Instead, we vote for politicians and support leaders who promote policies that kill mass quantities of the people we already have. Leaders who sell arms to Saudi Arabia so they can commit genocide in Yemen. Leaders who manufacture engineered wars to swell the pockets of federal contractors and corporations like Halliburton. Religious leaders who evangelize in AIDS infested countries and teach that contraception is a grave sin, which is like lighting a match in a munitions factory, no matter how self righteous the intent. Let’s not kid ourselves. Such things have killed a lot of people. And each person we have killed in these ways would have contributed the births of many more people in the course of a few generations. The answer is not to keep cranking out as many people as we can so that we can annihilate them with our broken system of casino capitalism that at its core cares for nothing but power and profit margins, while poisoning the planet that serves as the only platform to support the lives we propose to increase in number. If we spent some time fixing the way we think, and getting our heads straight, we might see more clearly such things as the fact that high birth rates are a survival strategy for lemmings and fruit flies, not creatures of intellect such as ourselves.
All the best!