Don't agree. The scarity you describe is artificially created. It is not real scarity. The world produces enough food every year to feed the everyone ten times over but tons of it goes to waste because only a relatively tiny fraction can afford to buy it. And they dump it rather than give it away so the prices of these commodities aren't forced down. Which in turns means the rate or profit falls. All this leads to the strange situation where more people are seen as a problem. Yet, it shouldn't. If an extra hand comes along to help me with a particular task, it could be completed twice as quick as if only one person was doing it. Theoreticall,y therefore, more people should mean we all become more wealthy. The point is: every human is a consumer but also a potential producer or innovator. The fact we don't take advantage of the latter fact is a problem of the wasteful prevailing social relations, not of the poor having too many kids.