If there are legitimate casinos will make people turn to gambling more. Resulted in insecurity, both because of the economic and social life of gambling based on risk and uncertainty.
If the casino is legal. To make more people turn to gambling. Resulting in both economic and social insecurity. Because the life of the player, depending on the risks and uncertainties.
If you have place casino legally. To make people use to gamble. Result in the instability of economy and society. Because the life of a gambler, depending on risk and uncertainty.