If you want to go back to subsistence farming, sure. The world is filled with places like that. Don't forget that your machinery is largely designed and built in urban environments. Don't forget that your serious medical care comes from urban environments. And, most importantly, don't forget that your customers largely come from urban environments. If the cities went away, so do your clients and your manufacturing and transportation sources. So, back to subsistence living for you...

I grew up in the city and spent summers on my uncle's farm and have seen both sides. Gods, I am tired of this fucking stupid rural vs urban debate. They need each other, and can't exist in a modern world without each other. Move to the countryside and I hear stereotypes about how shit the people in the city are. Move back to the city and hear stereotypes about how shit the people in the country are. Both sets of stereotypes are largely wrong. Likewise, the people whose jobs straddle both urban and rural environments are not the people who use these stereotypes.