I've never really liked heavy metal, but I'm sure someone can find one or two songs that I'd enjoy.
I think the blanket statements that are made in this thread are silly. I bet if the majority of people just gave a certain genre a chance, they could find at least a few songs they like. Outside of heavy metal, there isn't a genre I haven't found some appreciation for.
For example, most people hate rap here, but have you ever listened to Common or Atmosphere? Specifically, I like Atmosphere - Always Coming Back Home to You (AND the bonus track at the end) and The Corner or Be off of Common's album Be.
*shrug* In general, people could be more open to liking a wider variety of music, though that isn't to say that everybody falls into the same boat. I bet there are a lot of people on this board who have given different types of music legitimate chances and decided they don't like it, I just don't think the majority has done that.