But how much do you have to see, or suffer through, before expressing an opinion becomes legitimate? Must one see the movie in its entirety to make the call? What if a film becomes unbearable by 30 minutes in? What if every review, both good and bad, describe a film/style/what-have-you that you don't like? What if you loathe the scenes that play out in the trailers?
Making judgment calls beforehand is a fact of life. We can't experience everything, and we must pick and choose to make the most of the time we have. Sometimes it even happens in more guttural ways -- like refusing to eat the organs of an animal because it's "gross," or refusing to climb a mountain because of the height. Usually, the more guttural the reason, the bigger chance that you could be wrong, and the more reasoned the decision, the chance you will be right.
In the realm of film, we all know what we like, and what we don't. And when every card stacks up in the con pile, you know that there won't be enough "pro" surprises to tip the scale. There's a delicate balance in these choices, but I definitely think there is one. One doesn't have to see Faces of Death to know that they'd dislike the gore or dining on monkey brain. A person who dislikes romcoms, and has hated the previews for The Proposal, is not going to like the film. And after a lifetime of family films with sad endings, I know that I'm not going to come out of family tear-jerkers as a fan (even if they're done as well as Up).
Must we suffer through it all to write any sort of opinion or share any sort of distate? Is there a line before that? Where do you draw the line between too-quick value judgments and legit evaluations? Are demands to watch an entire crappy film just sadist mockery?
Doesn't watching a film with all the strikes against it become, at some point, nothing more than masochism?