I'm not at all because I do it for the game and the enjoyment you get from the game, its really fun doing it sometimes.
I never been greedy and it also would not be good at all.
Maybe now you haven't experienced it yet, but for once in your gambling life you would always encounter that.. A gambler always has that instinct when they are betting and they feel like unstoppable..Those who didn't feel greedy in gambling I think do not have future in gambling... Only those who dare to test the game has a good chance to win good in gambling, but if you are after the fun, I think there will come a time that you'll get bored in there...

Even if you will make good bets and your percentage of winning will increase, still not good in gambling as in the long run you will still lose. Greediness is always a negative factor that will be a hindrance for your success in the long run.