Saw just doesn't do it for me. I mean, once you've seen the formula of the movie, you can predict each event before it happens.
The bad guy always wins. When it looks like they might be saved/find a way out, they don't. This is also why I hate movies like Cloverfield/Quarantine. You know what happens at the end, and the getting there is just ticking off characters till none are left. I mean quarantine even has the final scene of the movie in the fucking TRAILER (Where she gets dragged off screaming away from the camera. The movie is a pretty much a direct remake of the movie REC)
The bad guy winning isn't always a bad thing, but that's usually because the bad guy isn't really a bad guy (Inside Man is my favorite example of this) But simply watching people get killed for two hours, then the credits rolling once the last one is dead isn't exactly my idea of good writing.