Once a time gambling was centered around a large social event. Gambling house were made temporarily in places where there was a lot of crowd. But later on it became very popular with the people and occasionally gambling was organized. At that moment it starts to expand massively and settles well. Then it is also get legalized. And whenever gambling is conducted over the internet, it creates a world wide frenzy. Nowadays, people are gambling comfortably from their home.
History of gambling goes back to the ancient times.
Even in religious books there is so much references of the gambling - Hindu and chinese are very fond of gambling and they are good in it too.