~
Is gambling a bad thing to do? As for me gambling is not a bad something but the individual can be bad and also the way you present yourself in the society can also tell people about your personality.
How do you see the father? Was he right by rejecting the son gambling win?
Looks like the father did the right thing, it is clearly mentioned that he is a boy even though his age is not mentioned, there is no way anyone would gamble or allow to gamble at a young age as it would destroy his career because he starts to think about making money as an easy venture. If he is a student, he must focus on building is life rather than gambling.
I agree with you that a father wants the best for his child and the father certainly understands that gambling will only have a bad effect on his child in the long term, especially if his son gets a big win which can change people's mindsets to be bad and think of gambling as a place looking for profit.