Would you rather receive an un-DRM'ed mp3 in exchange for the promise that you won't make copies of it for everyone else, or receive a DRM'ed file that you are free to try and circumvent? Particularly for less tech-savvy people I think the unDRMed option is better.
(the third option is an unDRMed mp3 that we can legally copy and give to our friends, which you can have already as long as you stay away from the major record labels, but I don't see why the big industry players shouldn't be allowed to continue to use IP laws - no-one is forcing you to listen to their music/play their games/watch their movies).