Emotion or lack of control of it . They just keeping playing at expensed of their financial health & well being
I agree, they let gambling take control over of themselves. They continue gambling even when they're almost broke because of the hope that they might be lucky and hit a jackpot when in fact the chances of winning is very low. Self control is very important in gambling because you don't have control you might lose everything.
Gambling most of the time would not be a problem to anyone as long as they have the control.
I am a gambler who also like to try my luck betting on lottery, and I never counted my loses anymore as I know when I hit the jackpot
that would certainly change my life. I know my chance, it's very low, but since it's possible to win, I will still hope that one day I will win.
Note that I am just using my spare money, money that I can lose without feeling upset or disappointment.