Question

PLZ ANSWER THIS ONLY IF YOU HAVE READ THE HOBBIT

Answer 1

It is part of human nature. The drive to become rich, and to take the gold, is the whole reason that the dwarves started off in the first place. They were greedy for the wealth. They were blinded to the position that they were in. Even when Bilbo took the Arkenstone Thorin didn't pay attention, and turned his back on him.