That's the common reaction if you keep losing you'll be force to stop if you do still have such control, knowing that it's no longer enjoyable if you keep frustrating yourself trying to win but nothing good happened and you keep failing yourself to experienced some wins.
Obviously that's just it, have you ever wonder why most fun gamblers always panic after gambling for a long period and then decide to quit? That is because they are tired of the fun which they are expecting something different but since it's not working for them so they consider quiting as the best option, while those that doesn't have such control might loss it as they will be trying to test something different. So in all I would say that wining is expected even though we are gambling for fun because it is the wining that motivates us and also make the game to be more interesting.
When we gamble with what we can afford to loss and doesn't do it consistently it can be considered as gambling for fun doing it regularly isn't fun any more but addiction. The most fun part of gambling is when we are winning or winning most times or at least ones in a while, i a neighbor who is addicted in gambling but some times he will tell me he is just doing for fun something you are doing for fun and you are just losing and still call it fun instead to stop, we can have fun with friends at bars, party club or watching football games with friends without staking anything.