I grew up in a home where there were no restrictions on movies and television. Sure if my parents thought it might be too much for me, they sometimes watched first or would make sure they were in the room with me. But I had no limits and I think I turned out fine.
When I was growing up I loved all the Disney movies and such to death, but two of my fav. movies were Pretty Woman and Silence of the Lambs, and I think I was around the 8 or 9 range when both of those movies came out. My parents tried very hard and were very good at explaining things to me, they didn't hide anything from me. They explained how things in movies aren't actually real and how some movies you just have to take for what they are on the surface, movies. I plan on doing this with my kids one day.
But I don't think it's wrong for anyone to want to be an informed and caring parent. You should be pround of the fact that you care, since there are a lot of children out there that live in homes without someone who cares. And I think this is an area where each family, each parent, and each child should be taken into consideration. To quote one of our lovely ladies above "Different strokes for different folks".