I was thinking about this question last night and was just curious -- do you keep all the drafts of your work?
I'm in the process of packing and moving to a new apartment. I'm also in the middle of revising my novel again, and yesterday, when I started packing up my desk, I avoided packing up the printed, marked-up copies of my novel drafts (I really hate packing).
There are several folders, each a couple inches thick, as well as plot and character notecards, stuffed in an old laptop bag that is really supposed to hold my old laptop computer. There's also a couple loose notebooks and folders stacked on top of that. I have electronic copies of each revision and of course, I'll always save those. But I'm wavering on whether to keep the marked-up and messy pages I just printed off my computer to revise.
On the one hand, I'm proud of them, because it shows how far I've come since my first awful draft. Also, since I'm still revising and don't have an agent or anything yet, I'm slightly worried about tossing anything I've written on this project. What if it's useful later?
But the organized neat-freak part of me wants to go through the folders and start tossing things. It's a new apartment, so it's a fresh start, right? I haven't looked at the paper drafts since I packed them away, so why keep them?
Maybe I'll just get another file box, strictly for the novel.

