I remember sitting through a sociology class in my high school in Brazil as the teacher presented to us students the rural exodus phenomenon. His negative tone to the presentation connected well to our contextual reality for as many of you know, there are many urban problems in Latin America such as high crime, favelas (slums), and unemployment. All world cities face variations of these issues.
For a long time I saw the urbanization of the world as something inherently bad. After all, God had created the world rural. In my imagination heaven was a place for plants, animals and human beings dressed in long white robes. While those things will probably exist in heaven (except for the white robes, of course), the Bible portrays heaven as an urban place with a main boulevard, streets, buildings and tons of people. Density, diversity and creativity are overtones of this depiction. Don't believe me? Go read Revelation 21-22.
History does start in the garden but it ends in a city. A city that God is building and that one day he will bring down from heaven. A city that will fuse into our Metropolis (New York, Sao Paulo, Seoul...), will bring them all together into one mega-mega-mega Metropolis, will eliminate what's bad in them and enhance to the maximum what's already beautiful in them.
This changed things for me.
I guess for this reason its not all that bad that more and more people in the world move to cities. Its inevitable that this rural exodus intensifies. The reason why the world is becoming more and more urban is because history is moving us to the biggest and the greatest city of all -- The City of God.
In the time being this makes me appreciate more and more where I live (God forbid I move to a farm town in the middle of nowhere!). It makes my adrenaline levels rise with the thought of engaging the mission of beginning this urban-fusion process here and now.