Your view on this is correct, winning isn't negative but what you do next would determine whether you would have a negative or positive result...some gamblers win and the next thing they think of is to try again, this is just as a result of insatiability and greed... winning comes with an excitement that if not properly controlled it can make you get carried away... That's why it's important to be in control as as a gambler
It's actually funny for gamblers who have won and then try again to get another win. Gambling is indeed to get a win, so when you get it, why not enjoy it?
Dissatisfaction and greed may be factors, but I'm sure gamblers who do it must be addicted. Because the victory obtained has not satisfied their desire to gamble. Even though they return to gamble, at least they have to feel the victory and leave a little to continue.
When you try to win immediately after just winning, you will realize just how fast you can lose your money if you are not careful enough. There is nothing wrong with wanting to go again but at least as have been said, don’t gamble everything you just won. You are less likely to double that amount so don’t try to be confident.