I guess all of those are valid opinions... but Slayer... parody metal?
I guess it's because there's never a hint of humour or lightheartedness in their music, combined with a lot of the actual lyrical content, which is insanely over the top. If I'm not in the mood for their stuff, it seems like a joke that their fans simply never got.
This makes no sense to me. Slayer were amazing...Dave Lombardo an innovator in that genre behind the kit. Seasons In The Abyss is a pretty dern good musical album that brought them over the hump of general Thrash. I believe them to be the pioneers of some melodic-*-metal genres.
Edit - Near miss for me:
Pain Of Salvation - I tried, I can't. I really tried.
Porcupine Tree - More of a complete miss than a near miss. Take The Cure, mix in some Metallica (post ...AJFA with all their crap from Load or Saint Danger or whatever the hell it's all called), a hint of Radiohead (minus
any of the talent) and some U2. They sound like an amalgam of all the really bad parts of mediocre bands.
Coheed & Cambria - I get it, you like comic books...you're geeks. But your music is bad.
Judas Priest - I love music from that time period, but they just can't get out from behind Iron Maiden's shadow.
Radiohead - Maybe if they stopped trying so hard to be different, and just were different I'd like them. But they remind of emo kids, being different just for the sake of being different, with no substance behind it.
Meshuggah -This one kills me, because they are so fucking talented and Haake does things behind a drum kit that should be illegal...but three songs into an album and I can't tell the difference anymore.