Edit:
Hey, how much are we allowed to alter unclaimed territory? For example, say I wanted to "sink" an island that wasn't near any claimed land. Could I do that? Or is there a rule against it because I'd be getting rid of perfectly good land that could be claimed in the future?
No, you will never use it all. So yes pointless.
Does it really matter? All that land equates to more resources and more things to explore, so it's far from pointless. So what if you only explore 0.001% of all of it?
Besides, the land isn't there from the beginning. What you see on the map right now, that's all we've got. We CAN generate up to 8x the surface of the earth, but we haven't yet, and don't intend to.