Is gambling OK? Don't bet it! There's not an easy or instantly obvious proof text answer to that question.
Of course, it's not a sin if you do not take money from the family and do not deprive your child of simple things. After all, your conscience must definitely wake up, and so there is extra waste, personally your business.
Yes. I also do believe that gambing is not a sin. Gambling is a mere form of entertainment where in you place some of your money at stake. Sometimes you gain from it, sometimes you lose. But in the end, its just a way of spending your free time. I believe that people must keep this in mind and must not let themselves dwell on the idea that gambling is a form of income generator. Moreover, gambling is not a sin. What's important for this is moderation, as long as we know when to play and when to stop, everything must shall be just fine.