For the last 100,000 years of humans existence the majority of the human population lived a nomadic hunter gatherer life. Up until 1492 half the worlds hemisphere lived such a existence and were quite happy with it.Most people steered clear of the city's because they knew that diseases and death from the tyrants who ran those places were the norm there. What few city's that were in the west performed human sacrifices on a regular basis. What scares urban and suburban folk about homeless people is that we answer to no authority but God and sometimes not even him (her?).