12tone: Why does metal have to be so loud?

"Turning the volume down on a brutal metal riff feels almost sacrilegious, like it's disrespectful to the music to hear it at anything but full volume. But why? Many genres can be enjoyed perfectly fine at a nice, comfortably quiet level, but metal resists that, and metalheads reject those efforts. So what's going on? Why does metal only work when it's loud as hell?" - music theorist 12tone asks in his latest video. Watch it below!