Too predictable imo. It was full of stuff that I would have rather not seen and I didn't feel that I got anything out of any of them other than the first one, which was minimal anyway.
The greatest thing about having watched them, in my opinion, is the ability to recognize parodies of it.
I still proclaim that they're terrible movies and really aren't worth watching (with the exception of the first one, maybe. I still thought it sucked) unless you're into gore. It doesn't bother me, but it definitely doesn't create a reason for me to watch a movie.