yes, including environmental diseases. because the environment there is a lot of gamblers, so many other people will also be affected and eventually get addicted too. if you want to really eliminate the addiction, then the environment must also be eliminated from gambling addiction.
This is illogical mate. Just because you're surrounded by gamblers, that doesn't mean that you will be addicted to gambling as well. Those gamblers are not the one responsible whether you decide to gamble or not. It's purely based on your decision if you want to do the same thing as what the other people in your surrounding is doing. It's not a viral disease which you can get just by looking and smelling the same air that those gamblers smells.