The Epic of Gilgamesh- All Twelve Tablets

Having finally finished Gilgamesh, I have some thoughts I would like to share.
First of all is the ongoing and unanswered question: What is the purpose of the Epic? I still don't know the answer for sure but something that we discussed in class today may have an answer. We found that it was Gilgamesh who told his story himself. There were clues of this in the beginning, '[The story of him] who went to the end of the earth, and over, who returned, and wrote the story on a tablet of stone.'-Tablet I. We see that all the story was narrated in Gilgamesh's point of view and that he wrote everything as he felt it, the fear in the Cedar Forest, the brotherly love he felt for Enkidu, and the great sadness he had after his death. This just makes me again doubt if Gilgamesh was good or bad, if he was a coward or if he realized how much others did to help him.
The conclusion I have come up with is that Gilgamesh is a little bit of both, he is civilization since the beginning and he is nature after Enkidu passes away. He somehow becomes both of them after Enkidu dies, we can see this when 'Gilgamesh [wore] the skins of beasts and wander[ed] hairy-bodied grieving in the wilderness' and in the last Tablet when it is Gilgamesh who seems to know everything and Enkidu who seems to be clueless.
Gilgamesh is everything, he is human in every stage of himself.