Reasons:
Enjoyable: the plane jump to the bus crash, skycrapers jump, the rock and final Paul parts.
Too much talk: i got some times bored with how much the talk was.
Worst history: from the 7 this is obviously the worst continuation for me, the villain absourdly got top cars, guns,... they still cant find him, gives himself completly to enemies alone, CAN DEFEAT THE ROCK O.o .... and other thing with nonsense.
Not much Furious: i'm not a fan of car movies but on this movie It was just the plane part. Final parts like the girl jumping from car to car... that was the most boring thing in the whole serie.
This is my opinion, i enjoy all the others 6 movies more than this one, i think ppl just love this one because they are trying to respect Paul Walker.