[Bancakes]

This planet cannot naturally sustain billions of humans. It takes all our industrial capacity and cutting nutritional corners just to feed us, and now one war in one country is to cut our supplies and put millions at risk.

Not to mention how most people don't have serious, productive jobs like doctors or lawyers. Most people have dead-end office jobs, ones that fuel global consumerism. Is that the technology you talk about losing? iPhones and videogames? And even so, unemployment is still an unsolvable problem.

You should drop your fairy tale expectations of living happily forever after. Mathematical models predict population growth and decline in nature. It is completely expected that when the average westerner is satiated emotionally and physically, they are not instinctively pushed to reproduce - why would they, there's nothing serious to work towards.