Money can really generate greed. No doubt!
Here, taken from www.ezsoftech.com/stories/mis13.asp
What is Greed?
Greed is the excess fondness of money and fortune. It is one of the bad manners that draw to various evils and sins.
Disadvantages of Greed:
Greed enslaves man and causes him grief. The greedy cares only for collecting fortunes without stopping at any limit. Whenever he achieves a goal, he works for achieving another and, so, he becomes the slave of avidity until death strikes him. He, also, exerts laborious efforts for collecting riches, but he is the less beneficiary. He tires for gaining fortunes, but death comes unexpectedly upon him to deprive him of enjoying that fortune. The heirs, then, enjoy his fortune very easily. Furthermore, greed takes to the slips of sinful matters that produce problematic situations in the world to come. It also hinders from doing charity.
Amir al-Muminin (as) said: "Know with certainty that you cannot achieve your desire and cannot exceed your destined life. You are on the track of those before you. Therefore, be humble in seeking and moderate in earning because often seeking leads to deprivation. Every seeker of livelihood does not get it, nor is everyone who is moderate in seeking deprived."
Amir al-Muminin (as): A greedy man will always find himself in the shackles of humility.
Amir al-Muminin (as): Greed is the key to trouble and carries man to hardship. It causes him to commit sin.
Imam Muhammad al-Baqir (as) said: "In his love for the world, the greedy is like the silkworm: the more it wraps in its cocoon, the less it has of escaping from it, until it dies of grief."

Recently I am involve with money transaction that requires no interest at all. I'm the main source where people get their e-wallet from. They pay me with local currency and I give them US dollars in return. All this while, I have no intention or whatsoever to cheat and get some interest for myself or nothing close to that. However today, some people simply displayed me a good example of how money can slowly or let's just say in a second, generate greed! Ask me what if I become a millionare one day, will I be content? Will I be satisfied with my life? Quit work sit home doing nothing, travel maybe or buy things...Of course there are many things we can do with our wealth, but will it satisfy you? No. BUT why are people especially when it's my friends take advantage of me just because they want to earn more?? Where's and who is to trust?? Ahh...forget it. I'm getting sick of this.
It's Thursday, and I got paid for my tutorials. Thank you Lord. Tomorrow is Friday, and I really can't wait!