Here in NYC, we have two NPR-affiliated public radio stations that often play different content, WNYC AM and WNYC FM, and their parent organization also runs WQXR (a classical music station) and NJ public radio. So even if you only listen to public radio (like I do), an untunable FM-only radio wouldn't be enough. ("Everything should be made as simple as possible, but not simpler.")
My ideal "simple" radio would be one that worked like my car radio: you can preset any number of AM/FM stations and then select them with forward/backward buttons. (And once you have a display that can indicate the station, it would be sad if it couldn't also be an alarm clock.)