Pete nailed the right answer. Think about who you hear comments about their cruises from. It is either the person who is so excited by the experience they are jumping out of their skins, or the people who choose to focus on the negative.
I have been in aft cabins before and never experienced a single problem. I won't say I prefer them, but I prefer any cabin to not being on the cruise. I would probably never write a rave review of an aft cabin, because I have always thought of of them as just average, but I would never complain about it either.