iTunes can easily handle tens of gigs of music, but putting them all in one big list is not my idea of music management.

If I wanted a big list of songs, I could put all my MP3s in a single folder and use VLC to play them. Search is easy with Spotlight. This is hardly "organization". For someone who can't purchase music from iTMS, what's the point of iTunes, then?

WMP, AmaroK and even WinAmp allow me to do much more with my music, and they aren't 80megs in size.