We need population growth to generate economic growth to enjoy a better quality of life. This is the biggest bullshit to come out from any sensible person. Population growth is not the only factor that leads to growth and a better quality of life. The sure things about population growth are inflation, congestion, higher demand for goods and services and many undesirable social and economic consequences that cannot justify the little benefits of growth.
Take a continent like Australia as an example. If with 50m, they can enjoy the whole continent, be productive enough to grow all the food and wine to make merry, why do they need to rush the population to 100m? If without population growth, maintaining at 50m for perpetuity, and they can produce a bit more for each person to better their life, what is the point of producing 100 times more to feed 100m people but did not live better except for a few super rich?
Coming back to home, if with 2m people, the people can have all the space to live in bigger properties, and own cars with more roads to drive around, and they could produce more goods and services to raise the quality of life, why do they want to push the population to 5m or 10m to have lesser space to live, cannot own cars but only to work ever harder to feed a population of 5m or 10m?
What for? Because the economists say there is no growth? If the population can be maintained at 2m, and everyone has a bigger property and two cars to go with, no traffic jams, and higher skills of people, goods and services produced are getting better with higher productivity, who the shit needs another 3m or 5m people to take away all the land and roads and landed everyone in shoebox flats and car ownership becomes limited only to a few?
I think the thinking is too simplified. What kind of growth, what kind of progress, what kind of quality of life? If every leader in the world subscribe to the population growth formula for a better life, the whole will be destroy at double quick time. Nature has ensured that population is controlled and not allowed to growth indiscriminately by throwing in many measures to keep it that way. If a better quality of life is simply to have more people, there is no need to have super talents or smart people to run govts.
The situation in Europe is slight different. They could continue to have a good life by being creative, innovative, improving knowledge skill and productivity with a smaller but able population. But they conned themselves into allowing less productive immigrants to fill the ranks and bloated the population base. They have reached a turning point where the Caucasian or Aryan stocks are being depleted by lesser stocks. This will bring about their demise as a self inflicted cancer. Japan will shrink its population but will continue to enjoy a better quality of life without being adulterated with lesser productive stocks to bloat its population. A smaller and leaner population is good for them.
If we are not careful, we could end up in the same way as Europe. Irresponsible and mindless increase of population is like drug consumption.