Hints in Letters that Sauron or something as bad would eventually re-emerge. As spoken thru Elrond and Galadriel. Lothlorien elves are Nandor. Galadriel's function is Gift Giver. Tolkien didn't believe in progress - the best situation was things remained the same.
Technology only speeds up obsolesence.
Tolkien did pull in Nature Myth. Sept. 22 start of quest, first day of fall. Respect nature and you are paying respect to Eru.