What you're really asking is,
Why do people have different tastes in music.
and that is like asking why do people have different tastes in sport, food etc.
One could say that one has to have an understanding of heavy metal, in order to care and enjoy listening to it.
One not so fond of it would say that the screams are unpleasant to listen to, though others would say that, the screams make the beautiful parts, more beautiful.
One's taste in music often revolves in their emotions affected by their experiences.
The treatment for most heavy metal poisoning is chelation therapy. A chelating agent specific to the metal involved is given either orally, intramuscularly, or intravenously.
Slayer i guess
The Price
Most modern songs are more fast paced, and when a gong is hit the sounds lasts a little while. This does not fit into the songs, so is usually not part of modern music. The sound is also loud, and can be unpleasant to many people, in the same way many people dislike loud music like Heavy Metal.
No. You Me At Six are most certainly not heavy metal. I would say they are more Alternative. If you are looking for heavy metal, you should look at bands such as Bullet For My Valentine, Avenged Sevenfold, Slipknot, Atreyu etc.
Heavy Metal.
"Heavy Metal : The Movie" .
Most people dislike their working environment because they have to work with People. These people are emotional time bombs that can negatively impact your career. Beware of people!
Rob zombie is considered metal , but most consider his music heavy rock an roll . He is under the heavy metal section in most music stores .
Some do, but most don't.
Metallica or Iron Maiden.
Baby by Justin Bieber