My "healthy" approach to gambling, be it slots (infrequently), table games, or betting on sports is this: I play with only money I can afford to lose.

I see it no differently than money spent on a nice dinner, show, or entertainment activity. If I win, terrific! If not, I haven't changed my financial standing any more than if I had bought a burger and beers.

I think most gamblers fall into that category. It's simply entertainment or a hobby.