The only advantage from gambling is that if you win big, you become rich overnight, which is not possible by doing a job or by having a own business, but if you loose, you loose everything, its better to stay away from gambling.
I never agreed that winning big money is advantage of gambling. Because it is not at all guaranteed with gambling. This is the reason many people are getting disappointed at the end of their gambling.
If you aim some entertainment to burst out your stress, then definitely you will get, that is the real advantage of gambling