Do you think that gambling is for enjoyment? I dont think so. Gambling is full of tension, especially when you lose your money. When you win you will be very happy but when you lose, you will try to recover your lost money and with anger mood you will never concentrate on your game and will lose more. You should convince people for some social activity.
Well, not all of the people who gambles look at gambling as a serious, a source of income. There are also a lot of people that look at gambling as a way to spend some free time, to have fun but at the same time hoping to win money. I mean, that is a two birds in one stone right? Who would not be addicted to having fun and while you are having fun, you are earning money though it don't happen always.