If I like who's in it and it's the type of film I enjoy....the ratings don't bother me.
And as they can be Harsh.....6.7 is a high number to start given films a fair crack at.
You've also got to take into considering why people rated a film negatively too. If it's a crime/thriller with lots of violence and swearing then thousands of fogies might just give it one star because they were offended, dragging a score right down when averaged. The same could be said about any film, that features anything offensive.
You're gonna miss out on a lot of great movies that might be 'right up your street' by only watching stuff that's rated over 6.7 lol