I detest seeing perfectly good drums stripped down and parted for no other reason than its a way to make a buck. I have seen some rare drums destroyed in just that fashion. A lot of them. Even breaking up sets is deplorable in my opinion, but I would rather see a big set broken up and all the pieces go to good homes than to see them end up as a pile of shells in a lighter fluid bath. And that has happened a lot. There was a seller on ebay who did just that, destroyed the shells because they were a hassle to deal with, and sold off the hardware.
I admire those who rescue drums.