Why was odysseus orginally called away from home why do you think he was willing to take on this challenge despite the risks involved

The episode discussed above in which Odysseus is a suitor for Helen is not found in Homer and belongs to later accounts of Odysseus (see Apollodorus). This later tradition recounts how Tyndareos, Helen's father, is besieged with suitors for Helen and turns to Odysseus, who may also be a suitor for Helen, for help. Odysseus suggests that Tyndareos make all prospective suitors swear an oath that they will support any suitor who wins Helen and troy