This is why I dislike most of metalheads. You think you're the be all and end all of all music ever. Go take the microphone out of your ass and get a real singing voice.
What makes you think you're qualified to tell me and others how we think? You shouldn't be so quick to judge an entire (very broad) genre based on a few songs. Many, many metal bands don't have any of the shouting and some others only do it sparingly or mix it in with other vocals.
I'll not reduce myself to the youtube style "NO YOU" whining that most musical discussion turn into so heres a list of some metal songs with (in my opinion) great vocals. Judge for yourself.
Epica: Quietus
Helloween: Power
Nightwish : Nemo
Evanescence: Bring Me Back to Life
Sonata Arctica: Full Moon
Delain: April Rain
Avantasia: The Mystery of Time: Where Clock Hands Freeze
Within Temptation: Mother Earth
Edguy: Down to the Devil
Sirenia: Lost in Life
Kamelot: Sacrimony (Angel of Afterlife) , don't watch the clip if you dislike sad/creepy.
Nemesea: Angel in the Dark
Volbeat: Still Counting
Xandria - Forevermore
Breaking Benjamin : Diary of Jane
After Forever: Semblance of Confusion (Has some shouting mixed in but also amazing regular vocals.)
Shinedown: If You Only Knew
System of a Down: Lonely Day
Jorn Lande: I Walk Alone