Spies and Soldiers
I won't say there's no merit in that idea, but the fact of the matter is is that anyone could show up at any time and decide they want it. Anyone could show up at any time and decide well, we're all entitled to use it because it doesn't belong to specifically anyone here. Out of the way, but retrievable for emergencies makes it a hell of a lot harder for someone to just decide its their's. We have no idea who will show up in the future, who could show up tomorrow and want it for themselves and make a big thing out of it.