If someone can't stop to gamble it's mean he's a gambling addict because there's no way a responsible gambler will try to gamble more than the money that they've budget for gambling.
A gambling addict is related to making money through gambling, so they will try to make as much as possible which is impossible and they will never achieve it.
Situation makes people do what they aren't meant to do in the first place. Some gamblers over gamble not because they have the intention to continuesly, they do it to win without a single loss but along the line, loss comes into the plan and when that happens, the first thing that comes to their mind quickly is to get back what they have loss and if they are not lucky on the first rollover, that's how rollover pile up in their sleeves.
Anxiety of losing everything can be terrifying because when you lose more than you plan, fear step in and if you are not the experience type, you will be angry and play more to chase the capital until you don't have anything on the balance and been addicted will never comes to your mind, they don't know they are affected already with gambling addiction.
There are very few gamblers, who gamble for fun only. I think only those who are rich and have a lot of money, only they take gambling as a fun only and may not care if they lose or win. Otherwise, most of the gamblers are very much concerned that they do not lose big money.
Your statement is one of the most avoided in gambling, people don't want to accept that gambling makes people to only gamble for money and not for the fun as they used to say. Anytime I heard I gamble for fun, rich kins men is the first thing I think of the person and if the person is not from a rich background, then I will believe the person is not saying the truth. Fun comes only if you have money to throw away.