I don't think gambling should be called a addiction it's not something bad or horrible as it's always is portrayed. Not all our alike, not even our fingers are the same size, each one finds a different passion which keeps him sane so I would call it a passion, i believe each person is sane enough to decide for himself, and so I feel each one can make his own choice without being subject to humiliation.
Only people who do not have a future will consider gambling as an interesting thing. The fact that gambling is a bad thing and has no benefits. As people who want a much better future, we must try to leave the gambling game in the fastest possible time.
Indeed, for me, gambling is a worse way to earn a profit and to have fun as well because how will you suppose to be entertained if you are frustrated from losing isn't? And how you can say that is one of the ways to have income if you are always loosing? There's a low chance for you to win in this way, and if you won then I can say that you were lucky enough. But don't get used to it because every time you play the more you come to your worst scenario.
Gambling is really not a good way to earn money because no matter how many times you would win you will end up losing. It depends to the person if he/she enjoys gambling because there are still people who don't get frustrated in losing in gambling because they are already rich.