In my culture and in my own country gambling is bad. It is shameful. They said that gambling is the work of lazy. They warned the gamblers. But gambling is not at all nrong or bad. It is up to the player if what makes him money interested to many and lose their appetiate to other things.
We really can't deny that there are countries, societies and cities that doesn't allow any gambling activity. They don't realize that gambling is one of the fastest growing industry in the world. And if they are going to allow tax on it, they will get profit. But well that's their belief, if they think that gambling is the work of lazy, then so be it.
Most of the countries do not allow gambling because they know what will happen the citizens start to gamble potentially they might even sell their house or belongings just to recover his/her losses in the worst case scenario ending up losing everything.