Sunk cost fallacy. I find myself doing that with TV series too. I'll binge watch a few seasons and then it gets bad. I also know that sometimes better writers come on during different seasons so I'll slog through the bad ones in the hope that a good season will appear. I could just look up episode ratings on IMDB and skip around, but then there is the problem of missing pieces of large story arcs.

Well, in addition to what others had said, I was hoping there would be a conclusion in this case. I felt a bit invested in the story and didn't know there would essentially be no conclusion at the end. If I had known, I probably would not have finished it.

Social skills?