I think being greedy is not really the problem, it depend on the level of greed because sometimes, greed even make us to do better. Maybe from my experience though, I have noticed that when you wish to play more in order to gain more, it works perfectly, might not be consistently but so many times I noticed it that greed can sometimes serve as a motivation.
I am not encouraging anyone to be greedy, and moreover I don’t even see any form of greed with what the OP did, he did what was right and I am sure anyone would have done same. It’s just too bad that luck decided to be unfair to him with the game; we all know that gambling is a game of luck. Maybe we should always check our stars to be sure it will be favorable in gambling.
I am just amazed at your level of reasoning, I am sorry I do not mean to be rude. How can you take greed as a motivation with all the motivating factors in gambling?
Greed irrespective of the level is a disaster and would doom any gambler that is involved. Contentment is the key to success in gambling and it is a contented gambler that would understand setting limit saves a lot of loses. Your intention may not be to mislead, maybe this has worked for you, but in gambling reality, greed is not a good idea for anyone.
For the OP, I am sorry about your lost and I hope you find a way to get back on your feet soonest. I know this kind of feelings because I have been in a situation like this. I thought my world had ended but here I am today bouncing and fulfilled. I recovered and I believe you will.