As a longtime Tolkien fan it’s always nice to see people rediscovering exactly why the hobbits were so good at resisting Sauron’s powers.
Their simple, good-natured, honestly sometimes stupid lives meant that there was very little you could offer them that could turn their hearts. They held no great ambitions and their biggest goal was to live happy lives, making them absurdly difficult to corrupt (Bilbo kept the ring for literal decades and could give it up with a little convincing, Frodo wore it on his person for an entire year when great men like Boromir grew mad after just being around it.)
This is why Gandalf loved and protected them when the wizards came to Middle Earth. He noticed all the great powers passed them by because they were small and insignificant, so much so that there aren’t even any records that explain where they came from because nobody ever bothered to notice them.
That’s why they were Gandalf’s ace in the hole in his fight against evil. Bilbo finding the One Ring and barely feeling anything was probably all the confirmation Gandalf needed that hobbits were absolutely necessary to take down Sauron.
P.S – It also contrasts how Sauron’s master, Melkor, was permanently defeated. While Melkor was taken down by the combined might of all the greatest powers in Middle Earth and the heavens, Sauron proved to be more dangerous because he could turn your might against you with his ability to corrupt all greatness (he destroyed the most powerful nation in all of Middle Earth, Numenor, by turning them against Illuvatar, or God), and one needed a soul steeped in humility and simple wishes in order to fight his brand of magic.