Infact no parent s would wan their kids to grow up as a gambler, they wish good jobs for their children to be successful so they dont think about gambling as an option to make money or double money.
Gambling is something dangerous if not supervised properly. It is true, gambling does not affect children's health but it does affect their finances and future behavior. Just look at people who are addicted to gambling, the impact on their lives is very serious, some even become criminals and some commit suicide because of gambling. So it's best as a parent not to gamble in front of your child, if you don't want your child to become a gambler too. In my country, many young children who are still in school are familiar with gambling, this happens because of the environment, maybe even their parents gamble in front of their children.
From your post gambling is something evil and people should keep away from it. However you are promoting that evil in your signature. Do you think it absurd then? Life will put everything in its place anyway. Check out famous criminals profile on wiki, in only few cases their parents were connected with criminals, so "like father, like son" does not work with 100% probability. Do whatever you want, but when your kid grows up, if he thinks that gambling is a good opportunity to make money, he will gamble. No matter if you hide gambling activity or not.