Bilbo Baggins loved the Shire. It was his home and he had never left it before. At least, he had never thought he would be able to do so.
But that changed, of course, that night when one wizard and his company of thirteen dwarves invaded his house, ate his food and somehow managed to persuade him into joining them for a journey. A very long and unexpected journey.
A year later, here he was, lying on the ground next to Thorin Oakenshield, who was slowly dying.
The first moment Bilbo saw him, he didn't think of him more than an intruder. He was just another thug. Even his title hadn't impressed him as much as it was supposed to. But oh, how wrong you could be about a person.
Throughout the whole year of traveling and spending time with him, Bilbo had realized how wrong he was. He had realized what an amazing person, or more specifically – dwarf, he was. Sadly, it was a little bit too late. Thorin was wounded. He was wounded badly and his time had almost come.
Even though it was hard, Thorin managed to say something. He looked at Bilbo and smiled. "Farewell, Master Burglar." He choked but continued anyway. "Go back to your books, your armchair." There were tears in the hobbit's eyes. "Plant your trees, watch them grow. If more of us valued home above gold, it would be a merrier world." And then he froze.
Bilbo heard a distant sound. He turned and saw the Eagles coming. He faced Thorin once again, trying to make him wake up and see the Eagles but with no success. King Thorin Oakenshield was gone and there was no way to bring him back.
The hobbit could no longer hold back his tears. He hugged the dead dwarf's still warm body and wept.
All these months of adventuring, Bilbo Baggins had wished to go back in the Shire to his comfortable chair in front of the fireplace, to sit on the bench outside and smoke. He had dreamt of going back home for so long.
But now that he was finally in Hobbiton, he figured out that his heart no longer belonged to the Shire, because the Shire no longer felt like home.
Because home is where the heart is, and Bilbo's heart belonged to Thorin Oakenshield, King under the Mountain.