Convincing people to enjoy gambling isn't wrong , convincing people to start gambling because they'll enjoy it is wrong .
One is just giving advice to someone who is already invested in gambling and is already on track, that person could be already addicted or just playing it for fun and probably wasting a lot of money .
Another is getting someone into an activity that can ruin his life and turn it into a living hell .
But generally , someone who is not enjoying gambling is an addict that should get help because he will eventually be ruined emotionally and can have his life torn up so convincing him to quit it is much better than convincing him to enjoy it .
People don't continue doing something that they don't enjoy, and if they don't enjoy it than no one should talk them into enjoying it ..