Why do you think that Thorin would not listen to roac?

Thorin's refusal to listen to Roac stems from his deep-seated pride and determination to reclaim his homeland, which clouds his judgment. He is consumed by the desire to protect his treasure and assert his authority, making him dismissive of outside counsel. Additionally, Thorin's growing paranoia and obsession with wealth lead him to distrust even those who offer sound advice, viewing them as potential threats to his claim. This tragic flaw ultimately contributes to his downfall and the conflicts that arise among allies.