Yes because you really need 600GB of mp3s which on the back of an envelope calculation is over 1000 days of listening for 8 hours a day at a reasonable bitrate with no repeats...

I'm sure, at amazon prices which is a fair approximation including CDs, you didn't spend $100,000 on them either.

This is really not a problem. Well it is but only greed created it.

I just copy it all over the internet. I can't countenance making multiple trips with a usb key, or even worse lugging around an external hard drive.

Which has to be reason #2 or #3 why I hate iTunes with passion.