An excellent film ruined by its ending

Rating: 7/10 (3 January 2016)

...No spoilers...
I had heard good things about Gone Girl and was pleased to finally watch it. The film starts well and only gets better as the storyline progresses. There are twist and turns which constantly shift your opinions of and emotions toward the characters. I felt well and truly gripped - there was plenty of suspense, as well as moments which make you switch between being frustrated and calm.
As the film approached the end I was thinking of awarding it a 9/10. It was very good. Unfortunately the ending completely ruined it for me. There were several ways in which it could have ended. I personally was hoping it would finish in the way I am sure almost everybody who watches it would want it to go. Even a more open ending would have also been acceptable, however instead it went in an incredibly annoying closed way. Such an annoying way in fact that I now never want to see the film again because I know I will spend the whole film remembering how let down I felt at the end. It was not just that it ended not in the way I hoped, it was also that the ending they chose had several flaws in it.
Overall, this is a film which could have been great (and for that reason I won't be too harsh on the rating front), however it was completely and utterly spoiled by the last few minutes. It is well worth a watch, as long as you turn it off ten minutes before the end.