Joys of adulthood, I'm just getting to all this.
I'm with Klondike; most radio is repetitive schlock. There is a Toronto station (Q107) that has turned me off Led Zeppelin; I love Zep, but they would play a few songs endlessly. Q and Zep are off my list now. But there are a couple of things that I have grown to like. First is Little Steven's Underground Garage on Sirius. A great variety of music from many eras and genres. I have discovered some very interesting bands from that. Second, is Groove music (formerly Xbox music) the 'radio' function would choose music related to any chosen artist. I have discovered some great music through that that I'm not sure that I would have found any other way.
I now go back to my own historical eras and Sturgeons law applies. As an example, as a pre-teen, I understood that disco sucks (not just because Alice Cooper. Steve Dahl, and D.O.A. said so). But now, I go back to what survived, and it is good. Before I get myself lynched, keep in mind that bands like Kiss, Queen, and Pink Floyd adopted elements of disco to remain relevant/profitable. I remain enamoured with such diverse music as big band jazz, opera, heavy metal, psychedelic rock, and classic rock. Keep in mind that Mozart and Beethoven were the punk rock of their time...
And I will close with the Osmonds. Donny and Marie's lyric "I'm a little bit country, I'm a little bit rock and roll" was prescient of the development of "New Country".