When I lived in Boston, I listened to WBUR 90.9 and WGBH 89.7 pretty much exclusively...EXCEPT for the Sox games on WRKO/WEEI, so that did add up to a lot of AM listening. Hell, while cooking dinner I'd often have the game on the TV in the living room and on the radio in the kitchen, so if I heard a big play on the radio, I could run to the living room and watch it (Comcast digital cable was about five seconds behind WEEI/WRKO). Although there was a major dropoff in AM listening during the time I lived in Melrose, b/c I could get the Sox via WBOQ 104.9FM, usually.
Living in Rochester I listen to AM a lot because the local pubradio outlet, WXXI, is 1370AM. It's convenient because I live about 500-1000ft from the towers, so WXXI is pretty much the ONLY station on the AM band I can get in my house. Everything else gets swamped. It only works for part of the year because of the sunset timing, but if I can I'll listen to WTIC 1080AM via skywave to catch Sox games.