There are a lot of questionable elements to seeing old Han Solo, but I appreciate that Abrams and Kasdan put him into the movie right at the end of his journey where he was about to get everything he’d been searching for and realize it all meant nothing to him.
Right after I saw Star Wars: The Force Awakens, I mentioned to a friend that there’s a whole Harvey Pekar story about a dedicated Wookie friend sticking by his aging human friend. The human is at the end of his emotional rope, trying to vainly recollect all the artifacts of his lost youth, transforming the dashing ramshackle setting of rebellious youth into a terrible and carefully orchestrated setting. A decor. A diorama of a thing that no longer exists. It fits in perfectly with the general fan-nerd impulses streaked throughout The Force Awakens.