In their article Want an iPhone? Beware the iHandcuffs published today, the Times makes a number of good points. Probably the best one is:
As some wags have said, the initials D.R.M. should really stand for “Digital Restrictions Management.”
One of the reasons I'm reluctant to switch to an Apple computer is because of the apparent lack of alternatives on the Mac. I don't use Microsoft's software or formats for music, I use AudioGrabber to rip to MP3 format and then listen to those in iTunes.
I'm looking at various lossless formats now because ripping is enough pain that I only want to do it once. Will I listen to the same music 30 years from now? Maybe.
So trying to get it onto the computer in a format that won't have to be re-purchased or re-ripped makes a lot of sense to me. That's why I'm avoiding anything that has Digital Restrictions Managment on it.