You document everything in LJ. Therefore you don't actually need to save, say, programs from all the religious events you've gone to. On the off chance you ever need/want additional details, you won't be able to find the bloody programs anyway.
Also: You don't scrapbook. You aren't even attached to phsyical mementos of events. So you have your ticket stub from every play you've been to recently why?
Oh, and how long has it been since you've even touched a zine? Perhaps you could use some of that filing cabinet for actual financial stuff.
Your more rational part
I found my Smith W-2. Where is my Atrium W-2?
She who knows taxes are due this Saturday
Edit almost immediately after posting (delayed due to computer restart): Found it. *wins*