It breaks my heart to see his eyes full of hope and dreams,
as in the end there’ll only be tears and death.
And then I remember Gandalf.
“End? No the journey doesn’t end here. Death is just another path… One that we all must take. The grey rain curtain of this world rolls back and all turns to silver glass. And then you see it. White shores… And beyond a far green country, under a swift sunrise.”
So I believe that Thorin has travelled to this far green country. That he became king under the mountain, proud, whole and with the scars on his soul healed. And with Fili and Kili by his side.
He will have found his “Home” after all.