After that post it is clearly that you have never tried any significant metal. To name Linkin Park, Bizkit and Staind as your examples show how little you know.

And saying that back when those guys played they didn't give a shit about what people think and played what they wanted. Guess what, metal bands do the same, real ones anyway. Maybe you should test some real metal the suggestions in here are good enough for you to try.

Anorexia Nervosa, Gamma Ray, Ensiferum, Elvenking, Iron Maiden. All diffrent flavours of great metal i suggest you try some out before you speak. If you still don't enjoy metal i can't help you. If that's the case your musical taste is obviously broken so keep the negative talk about metal out of here, this thread is for us who appreitiate the genre.

With that said i'll let you people have taste of some old hard rock the predecesors of metal if you will and they do indeed wipe the floor with all those bands listed by masamuneehs.

Deep Purple. Try out Machine head, great album. Highway Star and Smoke on the Water are the most memorable tracks on this album and Smoke on the Water got one of if not the most famous Riff ever.

EDIT: Terra was quicker, masamuneehs you do right in reading both and take notes to.