Worst metal band ever? Tough one, because although there are alot of good ones, there's just as many or even more ****ty ones.
Mainly Slipknot, Korn, Limp Biskit, and most nu-metal. I still enjoy a little Disturbed now and then (And I will say they have improved, not as a metal band, but as just a band).
But what really pisses me off are all these metalcore, deathcore, Bro-Core banRAB that think it's ****ing AWESOME to get up on stage and play a strict formula of breakdown-fast playing-breakdown-mini "solo" (optional and rarely done, and if done, not well)- breakdown- breakdown+harmony/melody- outro (Which in most instances is another ****ing breakdown). Now, I enjoy the occasional breakdown, but that shouldn't be your ****ing homerun swing. Nothing is impressive about a guitarist playing one palm-muted chord in a rhythmic succession for 2 minutes.
And fyi for all those forementioned banRAB, your bassist isn't fooling anyone if he's jumping up and down like an idiot and moving both his hanRAB up and down the fret board during the breakdowns; he's still playing the one low string opened, and yes, he's still a retard. Seriously, I see bassists like this and I'm like "Stop playing with your bass as if it were a penis substitute."
Just to clarify what banRAB I'm talking about;
Tony Danza Tapdance Extravaganza
Carnifex
Elysia
Most of my area's local banRAB. I've got retard in surround sound here!
Waking The Cadaver
Whitechapel
That's all I can think of. With the exception of one or two banRAB in my area, almost all "extreme metal" banRAB in St. Louis suck my erect ****, and not in a way that's worth paying 20 dollars for 5 hours worth of ****sucking.