It's probably age but at 60, I no longer care about the franchises I adored in the 70s, 80s, 90s and 2000s. I still cherish them but I'm no longer interested in new content.
My wife and I discussed this the other day. With less time left (you got to accept the inevitable*), we want to enjoy new things like The Boys, For All Mankind and The Three Body Problem.
Now I understand my dear mother when she said 'We've seen all the movies and TV shows, give us something new to watch!'
[*edit: I'm not depressed or anything like that. It's just that time flies. 12 years ago we moved into our last home, the one you buy to retire in. It seemed far off. Well, I retired this year and my wife retires in 10 months.]