In actuality, I don't think there is any one who is gambling for fun. We frequently claim that we gamble for fun, but I wonder if those who say that they do so will still gamble if the bookies decide to eliminate the chance of winning after a certain amount of money has been wagered.
It goes without saying that some people do not panic because they bet with money they can afford to lose and can easily control their emotions when they lose. However, they are not necessarily happy when they lose just because they think they are gambling for fun.