Greed is the reason
I come from THE financial capitol city of India which also boasts, probably the largest hutment / slum in the world. The reason the residents of these slums reside there is seeking money at all costs and hardships. Almost 100 % of them have left penury and starvation conditions behind in their villages and are willing to accept absolutely the worst quality of life possible. But if one were to take the view of late Mr Dhirubhai Ambani, the doyen of the largest Indian corporation, Reliance Industries, at the end of the day one needs only 2 square meals and shelter over one's head. One has to set their priorities right and their own definition of WEALTH !