I think this fact will become much more apparent as drones and droids become more common. The desire to control resources will become stronger when people can project that control "more cleanly". Battle robots and drones will be treated like a barbed wired fence used to keep people out.

No, it's not our definition of resources which differ. It's our understandings of human motivation which differs.

You see the US as invading Iraq to control it's oil. I see the US invading Iraq out of frustration and the wish to "send a message" a-la mafiosos.

Most wars are fought over honor and respect.