In my opinion, someone gambling for fun understands and accepts that they are likely to lose the money they wager. The money spent is viewed as the price of admission for the entertainment experience, not an investment or a serious attempt to get rich. Losses are seen as part of the game, not a catastrophic event. 
That's right. Those people who came to play for the sake of enjoying the game practically don't think about making a profit. It's a secondary factor that they don't pay much attention to. I wish I could join such people, but alas... I can't just play and not look at other moments during the game. My memory remembers everything in detail and it's no longer possible to deceive my mind, but I really want to forget everything and start all over again from scratch.