Maybe become rich from gambling will be their reason for still playing gambling. And they still enjoy the process even if that can give them more losses. They will not think about the money, but they care about the outcome. If they cannot win, they will try over and over, and of course, they will use more money to try their luck. They hope that one day they can win the games so that they can give them the money, but if they can calculate the winning money versus the losing money, the lost money will be bigger than the winning money.
The more you win the more time you want to spend to play and want it back the winning's that happen to you.but sadly that's not always happen even you like it or not there will be a day that you will lose.