We understand why people will think that money is the root of all evil because we have seen some people transform from one person to another just as soon as they have money. It is not really the money that is to be blamed but the person cos that is who they really were even when they didn't have the money. Still, the only thing now is that they feel they now have money to misbehave, and let's not forget that on the other hand, money can also make others become extremely good, better than how we knew them before the money came.
So we can see that it is not the money but the person.