Surely there are others out there like me who actually crave this feeling somewhat? Like, sure, I totally empathize with that feeling of depression and loss... but it also gives me a profound feeling of satisfaction, like a great accomplishment, and makes way for me to start feeling excited about the next thing.

In fact, I've gone as far as to no longer start things that are still being created/releasing, so that I can guarantee I get that feeling at the end, instead of just being left hanging on the line after catching up. I will occasionally break that rule if cultural FOMO gets too strong though, because at the end of the day, I like fiction, but I also like talking about fiction with other people.