A ) Ain't nobody's business if someone chops up a book that they own.
B ) I wouldn't do that myself (for the most part*).
C ) If someone asked me if they should do it, I would be agin' it (for the most part*).
*Depends on how bad shape the book is in to start with. Just missing a few pages or already half gone and rat nibbled? Two different situations.
For those who are interested in these complete as reference material, why don't you scan the ones you have and make the scanned versions available? Or if you don't have them and want the reference material, why not try something like
this or
that ?