Snip.
Even for those who are gambling for fun, they also need to take a break. It's not as if gambling is the only thing that could be done for fun; they can also focus on other things because the more time they are spending on gambling, the more they will also spend much more money as payment for that fun, and there is also how they will spend too much time doing one particular thing, and the thing will later turn out to be boring, or something else will start keeping them from continuing to play and not be fun again.
Whether you're gambling for fun or you're gambling for the profit involved there's a point you would have to give yourself a break. On a norms excess of anything is wrong and this includes gambling too. Yes, it could be boring too when we overdo a thing and by taking a break it helps to relax and think of more better ways to enjoy the games when we go back to it. It also can give us time to fashion how we spend our funds to not overspend out of fun.