Rotten Tomatoes review index usually was pretty close to my feelings on particular films, but lately I feel like it's not reflecting my view on movies. I'm not sure if it's the index, the reviewers or that my taste has shifted.
An example, MI: Rogue Nation got a 93% Tomatometer score
from reviewers, meanwhile - I walked out of the film about 3/4 of the way through, bored witless.
Conversely, the new Vacation remake received a 28% Tomatometer score
-I thought it was forgettable but a lot of fun. Lot's of other examples - Pitch Perfect 2 got a 66%, but I thought it was pretty awful compared to the original. Don't know, maybe I'm just too old. I mainly go for the popcorn anyway.