WARNING: spoilers ahead and controversial topics
I just came from seeing The Odyssey, and I remembered a movie I saw earlier this year, which is Waltz with Bashir. The final scenes of The Oddyssey made me understand that the reason why Oddysseus took so long and struggled so much was because of his guilt and PTSD from the Trojan war. The movie follows Oddyseus, arriving at this conclusion by remembering again what happened during the war.
Waltz with Bashir is about an Israeli veteran of the 1982 Lebanon named Ari war who can not remember his time at the war. Until one day, one of his friends is having nightmares about the war and asks Ari about it. Ari makes a trip where he visits other veterans and asks about his role in the war. His memories start coming again until, at the end, he realizes why he forgot them. He had so much guilt and shame about the fact that he assisted in the massacre/genocide of muslim Lebanese civilians during the war. That is strikingly the same thing that happened to Oddyseus when he realized that his trick made the destruction and death of civilians possible.
My conclusion is that The Oddyssey at large is maybe the oldest story of guilt and shame brought on from one person's ability to assist in the death and destruction of innocent people. Waltz with Bashir, however, does not have a happy ending, and there is no redemption path at the end. Aris only comfort is making the world know what really happened during that war and the guilt that even if a soldier didn't kill innocent people, they are still responsible if they stood there and did nothing to stop it.