You know these people. "Japan isn't that great." "Wolves aren't that cool." "Yaoi sucks." "(Popular thing) is overrated!" Etc. People who express these opinions loudly, not just because they feel that way, but out of spite for the people who do like these things.
When dealing with them, remember this - a person who tries to bring you down for simply enjoying something is usually just attempting to prove that they are a better, more sophisticated person than you are. And in that very act is the proof that they aren't nearly as sophisticated and mature as they wish they were.
So fuck 'em. Like what you like, and don't change under pressure. Because in my eyes, giving up something you like just because it makes you look like a stereotype is weak - holding on to it and proving you're more than that is strong.