Personally, I think both Itunes and hard copies are awesome.
Itunes: you have quick access, good quality, and costs less.
But it's not the same as owning the CD... when you actually have a CD for it, it makes it more real imo, and when you look at the CD it reminds you how awesome it is.
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(and it makes it feel like you're supporting the group more...) I'd personally rather have a physical clot of atoms making the album art than binary making my album art.
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...Though that could just be because when I was a kid we only HAD cd's and it feels more nostalgic and real...
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(actually, when i was really young we still used cassettes, though I'm sure many of you here remember floppy disks, records, etc. more than I do...)