Quick poll ... What do you do with your old PCs?
I'm a hoarder so I tend to keep everything - some is kept because "it might one day be useful for something" and the rest cannibalized for parts. The broken stuff I collect until I have a fair amount then I take it to be recycled.
Hard drives I wipe, and if they're dead I take them apart and destroy the platters manually.
While on the subject of recycling, my biggest hassle used to be old CDs/DVDs. I could recycle some but the stuff that I burned myself or contained sensitive stuff had to be kept separate and be destroyed. Now I've got a disc shredder which does short work of all my discs, and the shreddings can be recycled.
My biggest issues are now with cardboard and junk mail. I try to reduce on the amount of paper waste that I generate and I reuse a lot of cardboard but I still feel that junk mail is too cheap to send out and that things come with far too much packaging.