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 bullshit. So you are saying that the environment affect your addiction into gambling?? 
First of all, you and you are the one who decides and that includes if you want to gamble or not. If you are gambling everyday, that is your decision and getting addicted into gambling is high. Other gamblers are not a factor on gambling addiction. You can get addicted if you are playing every day for a long time.