This is such a taboo subject, when you start talking about population control. Like it appears that it may be necessary, but then you go into ethics, and 'well why don't you kill yourself as an example', and shit like that.
If this is the case, I only hope that humans don't destroy the entire planet in the process. Sort of like The Road if you've ever seen it, pure dystopia.
Kind of makes the 'resource-based economy' touted by Zeitgeist make more sense.