Da' Souf?

 Because it's cheap

Back in 2007, the average price of a home in Inglewood, California (Not the best area.) was about $513k with higher end homes selling for as much as $625k.
The current average price for a home in the area is now about $242k.

Someone said that all the smart people left the South in an effort to take advantage of more opportunities in the North and out West.
But migratory trends have a tendency to shift - people go where there are better employment and social opportunities.

If someone sold their home in Inglewood and moved down South - they could buy a home for cash (The above home is listed at $300 in Atlanta.) and still have enough to buy a new car and furnishings - with enough left over to go shopping.

Sure, many smart people left the South to take advantage of opportunities elsewhere - but the even smarter ones are coming back to do what current residents failed to do.