When I was in college, back in the dark ages of the early 1970s, the big concern was the population bomb and a Malthusian fear of famine from trying to feed too many people. We are still, nearly fifty years and three or four billion people later, running a food surplus in most of the world, most of time. We owe that surplus to fossil fuels, petrochemicals, GMOs, and the dominance of agribusiness. I'm not altogether sure that's a good thing, taken as a whole, but famine is, perhaps, the grimmest of reapers.
Now when I read about the dangers of declining populations, I have to wonder just a little. Why would a more "sustainable" population be bad? I tend to think it is for the same reason that immigration is heralded as a good, even when those immigrants are possessed of a vastly disparate cultural and religious background. Most of the new immigrants and "refugees" pouring into the West are not assimilating or being altered by the culture. The numbers are too large, the influx too rapid.
These immigrants are committing violent crimes. They are putting a burden on the taxpayer who foots the bill for housing, welfare, health care, and education. Governments are straining to handle and pay for the increasing numbers of unemployed and, often, unemployable foreigners. Yet it is the government that allows immigration. Are the people in power simply unaware of the problems and moved by compassion?
I think we all know the answer to that. Could it be instead that more immigrants mean more votes for those who wish to expand the role of government? Government, as I have said before, does not produce anything except more government. Like the Blob, it exists to get bigger, more powerful, and more invasive. Sure, there are some good people working in government jobs. We don't deny that. You can argue that some government jobs are necessary. Firemen and police officers at the local level sometimes do essential and heroic work. The guys down at the water treatment plant are saving lives every day.
So long as they are local and their jobs clearly defined, I have little problem with those who work for the city or the county. Except for the teachers, but they aren't really local anymore. And at the state and federal level, I'm obviously in favor of the Border Patrol and some degree of national defense.
The thing is that the political leaders in the West have no problem with an increase in crime or terrorism because it allows them to expand their control of the average citizen. The NSA monitors all communications under the guise of the Patriot Act and the "War on Terror". Despite the fact that drug prohibition feeds into gang violence just as alcohol prohibition did in the 1920s, the "War on Drugs" continues to enable police departments to expand, to militarize, and to excuse the routine seizure of property and assets without due process.
Government feeds on chaos. More strain on the education system excuses and enables the employment of teachers and administrators on the government payroll. The strain on health care justifies the government's push for more control of the health care system just as the increase in crime justifies the expansion of police departments and the prison system. And the vast majority of those employed are now beholden to the great white father in Washington or London or Brussels for their paychecks, pensions, and lucrative benefits.
Eventually, who is left in the mobocracy to vote against such expansion? The productive are now merely serfs in a vast fiefdom controlled by the political aristocrisy and their minions who now, more or less, vote for a living.
I can see where an end to uncontrolled immigration and a population decline would be seen as a threat.