I think that if you know enough about the story to think that you do not want to read it, then you should not.
Don't get me wrong, I loved The Hunger Games, though I thought the movie was much better than the book (a rare occurrence in my world!) But you should not cave to societal pressure. The lessons that can be learned from Hunger Games can be learned by reading a dozen other books in a dozen other genres that might suit your interests better.
My 4th grader wanted to read it because all of his friends were reading it, and although his comprehension level was up for the task, I had my reservations. I let him read it, and he hated it. It led to a lot of discussions about stuff he wasn't even ready to precess. Intellectually he comprehended the story, but emotionally he could not fathom such a "horrible" world where people would be so cruel to each other.
My 7th grader read it and thought it was cool, not able to grasp the deeper philosophical elements of the story.
You know yourself better than anyone. You know what interests you, and what level of violence, emotional content, etc. that you can handle.
Don't bow to societal pressure. Be yourself.