When I moved to Australia in 2007 I left behind several cubic metres of densely packed paper, twenty five years worth of accumulation, safely packed away in storage. Save for a Philip K Dick novel, I landed in Melbourne with just a bag of clothes and a keyboard. After a few years of mad collecting/spending in this wild land of opportunity I pared down my possessions and now try to keep only what I can fit in the space above which acts as an office/writing/drawing space.
As I get a bit older the books are feeling less precious to me. Do I really need that Barry-Windsor Smith Conan treasury? Over the last few years I've thought about getting rid of the lot when I turn fifty, save for my original art folders and a small bookshelf of the work I'm really fond of. There's no point in keeping all this stuff forever!