I don't think that there is a genre that is universally liked. I mean even rock which has become fairly accepted worldwide still gets criticism for "poisoning our children" (granted rap and emo/goth music has had to shoulder that blame more in recent years, but it still happens). It all depends on where you are and who you're talking to.
Honestly I gave up noticing genre a long time ago except in a very general sense. Rock songs are simply rock, not classic rock, not hard rock, it's just rock. I got tired of paying attention to what music is in and out, got tired of trying to figure out what song fits into what category.
And at this point I listen to it all, rock, pop, electronica, classical. From Beethoven to MCR to Gackt, if I like it, I do and I will continue to listen to it. I can't stand country music though and I don't realize understand why people do, but I don't put them down for it (except in a funning manner). I don't understand music elitism. It's pointless....though if you don't like Stairway to Heaven something is wrong with you.