^ Not completely correct. It's the system, and the amount of money people get these days. Before money was invented, people were trading for goods only. I can't really imagine a world in this time without money. How would you get anything, and what would you offer?
Money is a source of trading, and the beginning of trading stuff. People rob banks, and get money on evil way not because of money itself, but because they lack it, or want more of it. Therefore, it's the jobs, and the law which is making the society evil.
P.S. There were thieves before money was invented. People were getting stuff illegally before money, and during the "trading of the goods". There were always bad and good people, those who have enough of material things, and those who never get enough of it.
Don't take me wrong, but when you said evil, the first and only thought that crossed my mind was thieves themselves. If you meant something else, please say so.
To get on topic: Depends how would it work on someone with eternal happiness. As a modification in brain, or as getting something a human truly wants?