Hey, no kidding, that's the thing about good, sturdy boxes—you hate to discard them, because, well, they're so sturdy, and someone went to a lot of trouble to make them that way, and it seems a shame to go and flatten something that was deliberately made to resist damage, right?
And as futurecrime just pointed out, you may soon need some good boxes. So naturally, they accumulate.
I feel the same about keyboards. When you see good boards being discarded—boards that still work, even—how can you let them go into to the shredder? It seems a shame to allow something designed for the gentle touch of human fingers, something capable of producing great entertainment and literature, to be smashed apart by the non-gentle touch of destructive machinery. Same kind of thing, isn't it?
I don't collect any of that other crap you guys do, though. That's just weird.