There's a lot of brain drain in Kerala with people getting educated and leaving. Those that leave do, however, send money back to their families and I know many who return to live in India after 5-10 years. This was the case a decade or two ago and I'm not sure if it's still the case.
I had many aunts or uncles who would leave their family behind in India and work in the middle east for many years before returning to India. This practice helped them shore up savings and build houses.
I had many aunts or uncles who would leave their family behind in India and work in the middle east for many years before returning to India. This practice helped them shore up savings and build houses.