Thorin Oakenshield, or Gandalf, depending on your perspective.
Gandalf recruited Bilbo to act as the party's thief.
The Took genes, huh? Well they created in Bilbo a certain sense of curiousity, and a love of adventure. It was that sense of adventure that finally got Bilbo to go along with the dwarves on their journey to Smaug's Mountain.
If it is in the Hobbit, it is to get Bilbo started on his adventure. If it is in the Fellowship of the Ring it is to have the ring returned to the mountain to be destroyed.
a share of the gold
Bilbo's job on the adventure was to act as the burglar, using his stealth and hobbit-like abilities to help the dwarves on their quest to reclaim their kingdom and treasure from the dragon Smaug.
It clearly shows that they are serious about the adventure and that it would be dangerous. They agreed to give Bilbo one 14th of the haul and to cover any funeral expenses if needed.
They asked them to go along and their adventure as their burglar.
Bilbo is hired by 13 dwarves as a thief or burglar, as well as to make the party 14 rather than 13.
It is about Bilbo Baggin's adventure which happens before the Lord of the Rings books.
Bilbo is surprised the next morning to find that the dwarves have left without him, as they had planned to depart on their journey to reclaim the Lonely Mountain. Bilbo then decides to catch up with them and embark on the adventure.
After climbing the tree, Bilbo is filled with a sense of adventure, rather than his previous desire to live life quietly.
Finding the One Ring.
As much as he dreaded it, his "Tookish side" kicked in and he wanted to go.