yes it wrong because we all know that gambling is evil . we can loose more than what we expect . how much more if you encourage other people to join you ? That will only lead to more losses and it could also lead to some seriuos troubles like blaming or worst end of relationship.
Not unless you gamble only for fun , without real money involved . then that is i think more acceptable .
I would not say that it is wrong but i think that it is risky. we can convince only those people who you know are mature and they can understand that if they will take any decision it will be their own responsibility, and the second is that we should only give them suggestion and not to take their responsibility of losing their money.