Horror spans a huge range of aesthetics, I love older movies from the 30's and 60's and those that cross over horror and the gothic, Victoriana and fantasy settings. I love their feel, aesthetic, visuals, themes and many of the characters. There are things that only really come through in a horror setting.
But I'm not a fan of outright gore either, the only film I love with that kind of theme is Repo! The Genetic Opera, but then I love gothic opera's and musicals in general like Sweeney Todd, The Rocky Horror Picture Show and so on.
Then again I'm someone who wears skull jewellery and black on a near daily basis so my tastes don't reflect, well very many peoples at all.