Thorin in the Blue Mountains

[Kuruharan]

Originally Posted by littlemanpoet

Rumil speaks to something that occurred to me almost immediately as a possible piece of the puzzle. Revenge is close to the heart of Dwarves who have suffered ill at another's hands. So along with all the economic, namesake, and suchlike reasons, I can see Thorin refusing to settle for anything less on the sheer grounds that he will not let Smaug demean him into naming anything but Erebor his kingdom.

So was it personality difference between Thorin and his predecessors who did relocate their kingdoms after Moria or did it just seem more likely they would be able to kill a dragon over a something they didn't know what it was at the time?