It is the "elephant in the room".
It is a huge problem, there is nothing that can be done about it and other things demand attention. After a while, people just learn to live with the situation.
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► It is well known in the scientific community that every species on Earth, humans included, will reproduce until their population exceeds the resources needed to sustain it (food, space, etc.) unless something else trims its numbers. It is natural and it has occurred often with humans in historical times. Occurrences of human overpopulation have been local but is now worldwide.
It is also part of nature that after overextending the population, corrections will follow, often by famine during less than optimal seasons of food supply, along with other deaths caused by a weakened population and by acts of desperation. This also has happened with humans and will continue to occur.
For people, famine is only one possibility from a long list of natural and man-made disasters, at least one of which will destroy a very large percentage of the population.
Our population WILL be reduced, that is a certainty. When it occurs, for humans it will be the most terrible tragedy in recorded history.
For nature, it will just be normal processes.