The biggest factor here is self control, the greed to win more never gets satisfied until one loses every coin he have. Instead of celebrating, you'll end up crying.
Gambling has both positive and negative impacts, it depends on an an individual how well they manage gambling in their life, sometimes can win in gambling need to control emotions at that time. Suppose lose in gambling means need to have a patience for next win.
I dont see any positive aspect of gambling. If you have some positive affect of gambling in your mind, please do let me know so that the next time someone asks me about such thing, I would be able to answer his question. However, if you want to know the negative aspects of gambling, I would easily make a list of them and will send you if you want.