This. Even without mentioning the shows that go to 15+ seasons and become formulaic, there are a lot of things out there which have 5-7 seasons with some filler in each season, a couple of poor seasons, the last season usually significantly worse, when 3 tight seasons with a meaningful super-arc would have done better justice to the idea. If you really love it, you can watch it again.

I think it's significant that two much loved, much mourned shows with huge fandoms, Gilmore Girls and Arrested Development were revived on Netflix and neither really came up with any fresh ideas.