The reason why people gamble is that, gambling is really fun and exciting. It's good when you win because it gives you a different kind of self fulfillment. It makes you feel like you're a very lucky person whenever you win big through gambling.
That is correct, it increases your self esteem and there's an inherent joy whenever you win a bet but i don't normally get carried away unless the win is big but per my current games and the format with which i play them i don't win that big and so its a normal feeling.
Yes, now a days is not possible to win a big bankroll in gambling. But whenever we won a gambling it can build more confident that I can win more gambling games. Many times I felt happy when I won a gambling even though it is very little amount.
Whenever we win, we will want to keep playing for more. Everyone want to win more money and it is normal right but if you start the game with playing for fun then it is not going to affect you. You know that you are playing only for fun so you are going to use small amount of money as well, that is why winning some money wont encourage you to play