I truely believe that productivity cannot be boiled down like some of you are trying to make it seem. Money is passed in transactions and whether you think it contributed to society or not is irrelavent because a person makes a conscious decision to gamble and whether you are "damaging" them or not isn't the point. A person has the right to gamble and having that right alone is important regardless of the consequences. So you can't blame a system's productivity when it's restiction would be a far worse thing for your freedom as a person.
However, I just recently went to a casino for the first time, and I can say in all honesty that I've never seen a more depressing place in my entire life. There's something that it just so disgusting to me seeing a row of 12 65 year old women pulling a lever for 5 hours a day. I didn't play one game, I just stood there with my beer and watched my friends lose money all night. The place made me sick.
So while I think the whole "this job or that job is bad for society" is bullshit, I can see how a person can become jaded after living a life that is consumed by gambling.
I hope you find your way to a lifestyle that makes you happy Dan. The irony is that we all value our freedom so much, but what most of us really want is to have something to be responsible for.