The motivation to depopulate the planet lies in fear and the mindset of scarcity. The wealthy elite already own almost everything; the fear is that they will lose what they have. The fear is so overpowering that they become hyper-competitive...and willing to murder. Because they think that we think like they do.
Or, they have gotten in over their heads; they have the tiger by the tail. The tiger is angry, they are afraid to let go of the tail, because the tiger, who has been abused, will inevitably turn on them.
Or, they are psychopaths.
Regardless, they live in fear.
When we become organized together, victory is ours.
The United Nations' own documents estimate that the population will top out at 9 billion people in 2050. Population will plateau from then on, into 2300 AD at 9 billion people, because of reduced fertility rates, due to longer life spans (availability of food, water & health care), economics and social reasons.
The problem is not lack of resources, for example 2010-2011 will have the 3rd highest record yield of grains, but prices will soar because of poor distribution. The UN WTO is complicit in manipulating food distribution.
The replacement fertility rate is 2.1 children per woman and the world's aggregate fertility rate has dropped from 2.65 to 2.55 children in the last 5 years.