If you aske me if I am one of the two option ( gambling for a living, a living for gambling) I would say none of the above. I never use gambling as the way to earn a living, I have my jobs that can support my family. And definitley not a living for gambling, i will never put my family on the line just to play gambling. That act is insanity !.
Note: For and from are two different preposition that give different meaning when used.
I agree, I just gamble for the fun and nothing more or less, its just that gambling has to be fun and you should not depend on it too!
Yes, we should treat gambling as a source of entertainment, fun and a way to ease our boredom but it is not that bad to hope for some amount to win but of course don't hope to much for it, because you will think that gambling will be a way of living like those people who have experienced to earn good amount in it. That's why most of us don't really gamble for living.