Yeah, and if everyone in the world did exactly the same thing we would be already a) out of space on the planet b) starving because you can’t just eat sheep c) dying because there’s no high-functioning medical industry requiring a working manufacturing facilities to have nice things like MRI
1) we weren't running out of space on the planet until there was high functioning technology to prevent people from dying,
2) you can eat just sheep,
3) people lived just fine before we paid for massive bureaucratic buildings full of men to tell them they don't know what's wrong with them and full of facilities to keep people on life support.