Gambling needs patient people to be profitable ,the most of gamblers lose their money because of their hastiness . every one of us like to earn money as much as possible , this is a human nature , but sure gambling require you to have good management skills , otherwise you will lose every thing .
but i think money is something that make all type of people greed including children elders and even the old people. so i will like to say that every one is greedy up to some limit.