Gambling is not a way for you to get rewarded.
i think the word reward can be in any form and not only by money .
In gambling you can get rewarded with happiness happiness that you get on simple things related on the gambling activity that you do .
If you are looking for the possibility to earn money, then stay away from gambling.
if it's only a possibility then why not ?
Because wins can occur too in gambling if one is lucky but if it's the other way around then thats the time to discourage someone to play gambling .