Dante story had an essentially common sequence of events for that of a narrative. He initially started off wondering in the darkness of the woods and ended up reveling in the brightness of god. Started in confusion and ended in definitive enlightenment. Not to unusual, and there are also many signs that it is destined to be. For instance, all the three verses ended with the word “stars.” So no matter where Dante was, his final destination was ordained to be paradise bound, a happy ending if you will. Sense the author is depicting a tail of himself it’s typical that he would make it so. Considering Dante’s factual life, wondering in his exile, perhaps it was an ending he wanted to truly attain for himself. Saying the whole purpose of the entire tail is one of self-reassurance for eventual peace is more than a fair assumption.