Why did the dwarves take so much treasure from the Dragon's Lair?

The dwarves took a vast amount of treasure from the Dragon's Lair primarily as a means to reclaim their lost heritage and wealth after being driven from their homeland by the dragon Smaug. The treasure represented not only material riches but also their identity, pride, and the legacy of their craftsmanship. Additionally, they sought to restore their kingdom under the mountain and use the wealth to rebuild their lives and protect themselves from future threats. Ultimately, the treasure was a symbol of their resilience and determination to reclaim what was rightfully theirs.