I dropped WDVX (Americana -- bluegrass, some country, that sort of thing) several years ago because the morning DJ made some really racist remarks at a WDVX-sponsored fundraiser, and I never even got a courtesy response to my letter of complaint.
The AM Music of Your Life (big band era) station switched over to modern country about a year ago.
I stopped listening to WUOT (NPR) a few months ago after they fired one of the announcers for reasons I can't discuss because she's still looking into her legal options.
The station that was carrying the True Oldies satellite feed just switched over to conservative talk radio.
JACK-FM plays a reasonable (for me) assortment of music, despite their persona of annoying teenage boy ("Jack-FM. Playing what we want." "If you call Jack-FM with a request, you'll get our sympathy. But not much else." "Because 'playing what we want' is Jack-FM's answer to pretty much everything."). Until day before yesterday, when I heard, "Yeah, you're annoyed because we wouldn't play your request. But we're at your sister's house, so we win."
The only stations left are either Christian, conservative talk radio, sports talk radio, modern country, and Spanish. The Spanish station, WKZX, is good, but -- and I realize this is a pretty sorry reason to switch channels -- they have a very limited selection of advertisers, and I get tired of hearing the same ads three times in my 40-minute drive to work. Although the one from the spiritual counselor promising to relieve suffering caused by witchcraft and sorcery is intriguing. No, really, it actually says "No sufre mas de brujeria o hechiceria; llame a ...."
I think I'm going to start carrying CDs. Or books on CD.