I think that borrowing money in order to gamble money could be the worst thing a person do. This increases the chances of bad debt and what's quite worst is the fact that you must also pay interest if you borrow money. Even if you "win" money while gambling, you will end up paying heavy interest, which is very bad.
Gambling habit is very bad because you are going to always find yourself having the urge to keep on gambling with the expectation that your next attempt is going to pay you a huge amount of money. This is likely going to make you to go to any extent to get money even if it means borrowing to use and gamble. Most people who gamble are into serious debts.