Anyway, I digress: My unpopular music opinions I guess are mostly just extremely popular bands that I just I don't get.
Such as:
Bob Dylan-- Terrible voice. I like some of his songs only when they're done by others.
Bruce Springsteen- Terrible voice
KISS- terrible poseur hair band. Is the make up supposed to distract from the fact that they can't write a decent song?
U2- I just don't know what it is about them that makes so many people like them
Nirvana-- "I think I'm dumb." You got that right.
I do like Bob Dylan myself, including his voice - it's not perfect, no, but it's very distinctive and suits his music and especially his often brilliant lyrics. Personally I'd rather listen to Dylan's voice than a singer like Adele.
Bruce Springsteen I'm indifferent to, interestingly the rest of my family are much the same on this. His voice isn't my favourite and I can't particularly relate to the themes in his music, but I don't really dislike him either.
I'm with MW about U2, taking the Joshua Tree as an example it has the well known (and for my money great) hit songs like With Or Without You or I Still Haven't Found What I'm Looking For, but it also has songs such as the rather dark Exit and the understated but powerful Running To Stand Still which show different sides to the band.
Not a fan of KISS or Nirvana, the former are too showy for my liking and in the case of the latter I'm not big on grunge (although conversely I really like Neil Young with Crazy Horse).