I agree 100 percent with you that no one should kill over material things. We were all born with nothing and will eventually die owning nothing. But as a human species, just like any other animals, we are territorial beings who like to take and claim ownership properties so that we can set our own house rules. Family = people, land/property/country = house. Palestinian & Jewish families are always fighting for the same house ownership for example. (I posted under wrong comment earlier)