I don't mean just seeing something nice and wanting to have something like that. Some people would not mind doing anything to take what belongs to another. Why do we have people like that?
This is an attitude in the heart of a person, although it can be avoided but a person like this choose to act on that way because of being not feeling enough of having what he/she has and being jealous seeing others living with their great success. A people like this is always doesn't give peace in his/her heart.