All of pinklin's Comments + Replies
Re 2, the deprivation account, that matches closely with my views except that most people also carry equality (of opportunity at least if not outcome) as a value. Almost no people hold only one ethical value at a time. Holding equality as a value is why people are disgusted by the idea of the utility monster under total utilitarianism, which is a single being that deprives more pleasure from a unit of resources than any other being, and therefore under total utilitarianism should ethically get all resources despite the misery this would cause everyone else...
I'm not an expert on population dynamics but I'm fairly certain it doesn't work like this. The rate of population growth is going to be affected by the existing population numbers at some point, either because the area becomes resource-constrained and people start dying in higher numbers of starvation etc, or parents who are educated and have access to contraception see that opportunity for their potential children is more limited and they choose to have fewer of them.