As a side question -- a corollary to the original, if you will -- is there a genre of music that you used to hate, but have gradually grown to admire/like/love? Vice versa, do you now loathe something you used to adore?
For myself: back in my late teens, I could not [i]stand[/i] classical music. Or opera for that matter. Or anything even remotely C&W-ish. But nowadays, people like Shostakovich and Puccini and Brad Paisley are among the staples of my musical diet.