because......
any choice in every bodies life is actually a gambling
choose a wise husband from a bunch of boys is a gambling
choose a school to study is a gambling
choose a boss to work with is a gambling
so, gambling is addictive
no one can escape...
these are not only the reasons there are lots of reasons available for addiction but everything is based on the money only if the money is needed for everyone then gambling is one of the best way to make and very quickly can become achieve the target in your mind that's why it is more addictive.