Radio / Mp3 player

I have a mp3 player with a decent capacity and I have got all my favorite songs in that. But still I think I like listening to the radio much more. I had always wondered why. If I can always listen to whatever song I like, using my mp3 player then why do I like this radio thing more. I think this is what is the reason : CHOICE.

yeah.. This is yet another proof for my previous post "The problem is choice.". When I listen to my radio, I just listen and it plays gud music most of the time. I dont have the choice to change. It will just play on and I can concentrate on my work.