Love Me, Hate Me, But Can't You See What I See?

You know when you ask people "So what kind of music do you like?" and they always answer something like "Oh, I like everything!" and it's really, really annoying?
It's a pity that the statement is actually true for so many of us. It's so hard to push one's music interests into compartmentalized genres, especially since music in itself is meant to be a form of self-expression and personalization.
(P.S. The title of this post has changed according to what song is currently playing. So far, we've gone through lyrics from Lil Wayne, P!nk, Lady Gaga, Selena Gomez, Britney Spears, Akon, and Lil Wayne again.)
How exactly does one classify one's music tastes without sounding so generalized? For instance, my music library contains varying amounts of:
Goth Rock
Symphonic Metal
Prog Metal
Screamo
Dance
Electronic
Gothic Techno
European Dance/Trance/House
Dance Pop
Country
Country-Pop
Adult Alternative
Girl Pop
Top 40s
Pop
R&B/HipHop
Rap
New Age
Alternative
Soundtrack
Instrumentals
Classical
Emo
World
Audiobooks
(courtesy of my itunes library)

How do I not say I listen to everything? I don't quite understand. So far, I gone along telling people selective genres according to what they might like (for instance, a discussion with Davey Havok would involve "Oh , I really like Goth Rock and Metal, and sometimes Pop." while a chat with Nat King Cole would have "I don't listen to your music in the least, but I like Enya and Classical music.")
Hmmm.
On a tangential note, have you ever heard a song somewhere and absolutely hated it? You go around condemning that song to everyone who mentions it, and groan everytime you hear it.
And then, something odd happens--you've heard that song so many times that you now know the words, and you sing along to the song, and you eventually end up liking the song.
Happens to me all the time, which makes me feel lame.
Oh, life.

--amaranth