Well, sometimes the old people are right in their opinion because they have more experience and they are telling things based on their experiences. The new gamblers may not know about the things which the experienced gamblers know and therefore we can say that there is no alternative to experience.
Of course, if you talk about gambling in front of kids, sooner or later they will get to know about it and may get influenced to gamble if their elders are gambling and are much involved in gambling. Kids won't care about the end result or outcome of gambling, if they found their parents and elders brother sisters involved in gambling, they will just want to do the same and may force their parents to give them a chance to play and gamble.