I've often felt that Bombadil's importance to the story is overlooked. Without him, the hobbits would never have made it out of the Old Forest, and (even if they had) Merry wouldn't have had the Numemorean sword with which he wounded the Lord of The Nazgul. As a result, the Battle of the Pellenor Fields would have been lost, and Sauron's victory guaranteed.
Boru
Boru
‘I can’t be having with this.’ - Esmeralda Weatherwax