Heavy metal is forever. Period. But that's not to say we get bored with ourselves from time to time. Power metal seems naff until Blind Guardian releases a blinding record every few years or so. We largely ignore traditional NWOBHM until Iron Maiden drops some old school chops on us. We release a certain Norwegian neo-Nazi out of prison for arson and murder and people go apeshit with some kind of blind veneration for him. Disolvos Animus aren't bored with the spent-by-then late-90s second wave of black metal, even though the majority of metalheads are (save for one or two bands) and seem rather proud of that.
Read more at Metal As Fuck.