I'm surprised so many people want to listen to playlists that somebody else made.
It's the new radio. Even when I used to make mixtapes and mix CDs in school, I'd eventually get tired of listening to the same things and turn to the radio to get some variety.
I love the idea of a radio station -- a curated playlist that fits within a general theme and evolves over time. That's what I'm very often looking for in music, and it's why I still listen to the radio in my car. I get tired of single albums or trying to manually create large and diverse playlists. It's also why I use still Pandora. I have a few stations which seem to work fairly well, although it does seem to get pretty repetitive, and I'm wary of adding new seed artists due to fears of ruining what I've got currently.
That said, I abhor advertising and don't tolerate it in any quantity. I can subscribe to Pandora but when a radio station starts playing ads I change stations. If all of my usual stations are on commercials, I mute the volume and enjoy the silence for a while. At least mixtapes never had that problem (well, unless you forgot to hit the Stop button while recording!