Not all perfect examples (e.g., some aren't metal, but they all have their own edge to them)... Kittie, Lamb of God, Dream Theater, Green Jelly, Heart, Ministry.
(Well, as you probably know "nirvana" is not exactly a perspective that many ordinary people welcome, and it is in fact very far from some concepts of "heaven"; "Nirvana" for the eponymous band meant "induced bliss"; the band was far from fixated as e.g. Cobain found documented inspiration in the Damned ("Come as You Are" is apparently a citation of "Life Goes On") and the latter just lightly enjoyed the eerie spirit uncommittedly - a spinoff was Captain Sensible solo projects with "Wot"...
You don't go to Amazon for rainforest information.
You don't go to Google for information about big numbers.
You don't go to Uber for an Aryan vibe.
You don't go to Apple for fruit.
You don't open Windows to let in a cool breeze.
You don't need a trap for your wireless mice.
Monster isn't going to eat you.
Jeeves isn't actually a person you can ask, and knows less about buttling than you'd expect.
FireEye is competition to crowdstrike, not an STD.
You get used to it after awhile.