You know... My parents ask what happened to real music back when I was a kid and these artist were popular. Then they'd tell me about Billy Holiday, The temptations, and a bunch of people I read about in history books. My reply was... "Nothing happened, you just got old."
My parents asked the same, and ya know what? They were right.
There was some good rock when I was growing up, but the likes of The Allman Bros and Led Zeppelin blew the fucking doors off of anything I'd ever head before.