Why does Sigurd take Fafnir's treasure hoard?

Sigurd takes Fafnir's treasure hoard primarily to claim the wealth and power it represents. The treasure is cursed, and by taking it, he believes he can secure his own fortune and destiny. Additionally, the hoard is a means to fulfill his heroic journey and legacy, as acquiring such riches is a significant aspect of his transformation from a young warrior to a legendary hero. Ultimately, the treasure serves both practical and symbolic purposes in Sigurd's quest.