A friend of mine at work mentioned around 1988 that I should listen to 10,000 Maniacs--the name sounded interesting, and (I'll probably get beat up here for saying this) Natalie Merchant's Greek Siren-like voice led me down a more, er "primrose path" musically. Peter Tosh, too.
[On a personal note, I might have been able to get the courage to ask Natalie out back then even though she was totally out of my league--like my wife, and I dated a few women like Lita over the years, but asking Lita out? That's a whole other level of courage. Iommi was engaged to her, by the way, for reference.]
I'm 55 and I still listen to metal especially while working, but I stopped trying new stuff in the early 2000's. So the newest I listen to would be Slipknot or Soulfly. My brother tried getting me to listen to modern "Norse Core" or something, but I didn't get it.
I suspect my wife got into metal through the albums of Bon Jovi, but she denies it.