Horror is the movie genre most positioned to take advantage of the fears and desires in the deepest parts of the human psyche. It’s also the genre that has pushed the boundaries of what can and should be seen on the screen, particularly in recent years. Horror films, particularly those released in the 1980s and afterward, have worked very hard to plumb the hearts and minds of viewers, bringing out those things that many people are afraid to face in their everyday lives and laying it all out on the screen. These films stay in the mind long after the final scene, demonstrating horror’s enduring power...
Maybe don't critique them then? I personally never 'got' horror as a genre either until the last year or so, but the feeling I get from a holocaust documentary is not comparable.