In my opinion, it's not that simple. It's true that most gamblers in the world don't need to stop, because they are enjoying the process never spending too much time or money on it. But there are some people who must stop because gambling is just not for them. Being a good entertainment for most of the people, gambling is a killer to them, it ruins their lives and the lives of people around them. And such people should rather concentrate on finding another passion than on "making enough" money in order to stop gambling.