Gambling habits doesn't really pass from the gene of parents to children, most children are easily influenced by the hobbies of their parents. Normally most male just have interest in gambling because of the money it brings .
The question is do parents want that their child is involved in gambling or do excessive gambling? I think that gambling is such a game that even though parents play it themselves, they do not want their children to inherit this habit. However, if you play openly then children will watch you gamble and they will develop an interest in this. If you want that your children do not inherit this gambling habit, you should not gamble in front of your children.