In the 20th Century alone, world population went from 1.65 billion to 6 billion.
The world's population birth rate is 1-1/2 times the death rate. More people are being born than are dying. By 2050, it is estimated the world population will reach or exceed 9.2 billion. There will be problems with feeding the people and providing fresh water for everyone. Keep in mind that there is already a huge hunger problem around the world and quickly disappearing glaciers and fresh water aquifers. As the need for more food and water (and space), costs for the necessities of life will rise dramatically. You can close your eyes and your mind to it for now but not for long. Whether or not you admit it, it Will happen.
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