death/black metal vocalizing styles

Probably the biggest "hot topic" of debate when it comes to metalheads is the vocal stylings known as "growling".  metal is the only genre of music that incorporates vocals that arent "clean-voice" (archetypical singing).  many people are opposed to the idea of growling; the primary reason being the fact that they cant comprehend the lyrics, due to the natural distortion of the vocal chords.  they see no reason for the singers to 'mutilate' their voice this way.  there are multiple reasons for a metalhead to prefer and enjoy growling as opposed to clean-voice.  the first being the instrumentation of "power" that most clean voice tends to lack.  there are exceptions to this, as with all rules, for example: maynard keenan of the band tooland a perfect circle, and ICS vortex formerly of the band dimmu borgir (and many other bands including lamented souls, arcturus, borknagar, ved buens ende, and dagoba).  however for the most part, when you take the face-melting earth-shattering riffs and drums of a death metal song, and put it behind the whiny sing-song clean-voice vocalizing, it is extremely apparent that the vocals can't match up.  as far as comprehension of lyrics go, death metal focuses on the instrumentation and sound of a song, as opposed to words say.  not to say the lyrics of a death/black metal song can just be disregarded,  some of them are quite profound,  and some of them are badass as fuck.  after years of listening to these types of vocalizing, one can begin to easily decipher the words "behind" the growl, and fully enjoy what the music and lyrics together have to offer.