I would say that making the decision to cash out early before everything ends in regret is a wise decision which indirectly is an action that is the same as you appreciating the luck that has come to you.
IMO gambling doesn't always give you a win. And if you win double on your bet I think in the next few games you will lose the money again. Some people choose to cash out the money and yes that is a good choice. For gamblers who want to make money from gambling it is better to cash out. But if you are still playing it means you will actually put your money back in the casino someday.
I think you can keep your winnings there so you don't have to make a deposit with your salary. Some wise gamblers who only gamble for fun will choose to keep the money there and come back to play another time.