Fact: Overpopulation is a serious risk to all life on earth (because humans, like other animals, are mostly egoistical) and foor + water = more humans
The HUMANE thing to do for the future is reducing population, not increasing it.
But of course, that leads to inhumane thngs on the short term.
So, to do good you need to do some evil.i
And now you have to form an opinion about what you consider good or evil.
There is no need to. As all empirical data shows us population in developed countries tends to stabilize by its-self.
The best course of action is self-evident. We raise the standard of living of poor countries , the population stops exploding due to increase of education and awareness of people.