Environment influences kids so if they see grown up doing it, they will also be doing it. I for example grew up where my parents are not around but with my brothers inviting a crowd under our basement and play cards and billiards. Its not surprising that even my sister knows how to deal cards like a pro.
So if gambling is exposed to children, its got an effect on them but the good part is that they learn and may not be addicted to it when they grew old. Because the interest of the kids changes over time.
Hopefully that will happened as per my experienced, I know someone who grows around people who are into gambling,
As a kid he's been watching he's family playing cards, now, he's one of those known personalities in terms of gambling, always finding ways to keep on playing and to have that good chance to win. Gambling is always in him as days won't pass that he won't gamble, but most of the time he enjoyed winning and by reading his gestures he's using this venue to feed his family.