Re:NIMBY all over again. (Score 1)

"There will no longer be enough space or water for humans to live comfortably. Every city will be like Tokyo or Mexico City. The Earth will no longer be a nice place to live."

Using the land area for Iraq given by the CIA, CIA Factbook, and the 12 billion people you estimate will soon inhabit the Earth, then each of these people would have about 388 square feet of land in Iraq.

Seems that there is plenty of space for the people, but I'm not sure about the availability of other resources.