If you look at it from Malthus's point of view, if the birth rate goes up more and more, that means more food production. The extravigant planet that we call home
does not have an unlimited amount of resources. We would eventually run out, thus destroying us all. But the population factor is not the only problem.
Our cars and factories pose a threat to human life as well. All the pollution that we have dumped into our atmosphere is destroying our ozone layer. This is letting in the sun's harmful rays at an dangerous level. This is increasing the temperature of the planet. This could end life or lead to what Malthus called famine, pestilence, and war. This would be the theory of the Apochalypse.
I do believe that we are the cause of our worlds greatest griefs. Untill I see that what I am saying is not true, I will believe in this untill I am put six feet under.