I am talking from my own personal experience, and I am happy with the length of my stories. I find working on the same story for so long can get irritating, and a lot of the time when a Galactic drags out I end up rushing the last few paragraphs cause I am just so bored with writing it. I rely on character interaction and description as well, but I prefer dragging my plot and turning things into arcs that I feel are easier to read, easier to write and more likely to make people hungry for more.