Also; many have argued cities are more efficient than the alternative: https://mitpress.mit.edu/books/environmental-advantages-citi...
Not that I disagree with your sentiment, but 8 billion people going back to a primitive way of life doesn't seem like a sustainable option either. Nice that you have the privilege to do it, though. Ironically, we are in need affordable housing where the city jobs are. That way we aren't forcing low paid workers to commute 1+ hours each way each day to put food on their families table. Here's the ironic part: depending on where you live, selling your city house in the current market only makes that problem worse!