Oil isn't the only resource of value. I'm sure there's tons of minerals assuming it is made of some kind of earth like material and not a hologram or an artificial satellite like some conspiracy theorists think.

Plus as I mentioned, the strategic location is incredibly important in a military sense.
Those who controlled the bow and arrows first won, those who controlled horses first won, those who controlled the ocean first won, those who controlled the sky first won, those who control space first will prolly win.