Further thought on Lord of the Rings
So at the Council of Elrond, there is an elf-lord, Glorfindel, who argues that the One Ring be deposited in the middle of the ocean. Gandalf acknowledges that if might well be safe there for "a passing of a world," but because the threat -- even if incredibly long delayed -- would still however exist, it must instead be dealt with for good immediately. To me this sounds a bit like someone arguing that, yes, the sun is in no soon danger of burning out, but a number of billions of years from now it nevertheless will do so, and so it is our greatest concern to do something about this fact -- NOW.
Fortunately Elrond immediately steps up to argue that the way east to the sea will be under most watch -- it's likely what Sauron's expecting -- so it's not really an option, anyway, because otherwise Gandalf would seem a bit ripe for mocking; especially considering that the alternative he favours involves bringing it closer and closer to him, where the orcs get denser, and the pathways, more clogged.