What bitching and moaning? Only because some people are louder in telling their opinion, it doesn't mean it's representative. Over the years I learned to trust the representative votings on imdb.com. Currently a bit over 205,000 people have given their vote for the 2nd Hobbit movie and it currently stands a 8.2 points out of 10, which means it's still within the top 250 movies of all times.
Part 1, by the way, was voted 8.1, which all considered is a fair vote, too.
A lesson I learned in life is, that people who disagree with a majority always try to exaggerate or to shout down other opinions in order to get heard or to give the impression they are the only ones right. We wouldn't have this problem, if everyone'd be honest and emphasized they're only expressing an opinion and not actual facts.