True, it's a convenient options that people might find useful. At end of destination, let say from shopping, you need to find any places you recognized that you need to drop by*. Summary is nice to remind the users how the route was made, perhaps for future references of knowing where it is.
But each to their own taste, that's the beauty of NNG, highly hackable.

* I go shopping at Target and oh wait I need to drop by Walgreen as well.