to me the only reason to become addicted in gambling is the expectation to make money. but in fact gambling is one of the most difficult job of the world therefore most of the people cannot make money in gambling and they even lose their own money.
Exactly right! The expectation of winning in gambling is really one of the main reasons why people want to play gambling and over and over again will play until they will hit the jackpot which is not easy task to do.