INTJs should know better than to gamble... being good with facts and logic, here are the facts:
The house always wins, the only real chance you have is if you play blackjack and count cards. Other then that, it's all up to chance.
This can be demonstrated without losing much at all. There are a number of sites you can play with fake money for free that have the same payouts as a typical casino slot or keno machine... watch as you slowly lose all your money.
Go to a casino, play a keno machine, and bet only a nickel per hand... sit there for hours... play thousands of hands... you'll probably end up down some money, and if you didn't, you just got lucky. The numbers generated are completely random.. the payout is designed so that the odds of winning are factored in and a certain 'percentage' comes back to the player. I walked out with a free crab leg meal and 10 bucks today from my bi-weekly visit to the casino for some chow and thought I came out well. I usually lose my 5 bucks and leave like clockwork.
For those who insist on gambling with machines, the best chance you have is to pick the highest progressive jackpots you can find and bet to try to win them... but don't forget about the taxes you'll have to pay for winning such large amounts.
Bottom line... don't gamble. Buy something that will retain or increase in value instead, like platinum, palladium, guns, land...
By the way... for those who like poker, here's a little known game confined to around where I live called silverado stud for you to enjoy for free with fake money. Every time I've played this unique and rather enjoyable poker game I've drained my fake money balance to zero.
http://www.silveradostud.com/HowtoPlay.htm