Have you ever (or would you) convert a pBook to an eBook? I converted my first one this weekend -- Lilek's Gallery of Regrettable Food -- and it was very fun and liberating for me... but my husband was sad and thought it was being mean to the paper book.
I thought saving it for eternity was more respectful in the long run, but I know that a lot of people feel that conversion is essentially defacement...
The hardest thing was knowing what to do with the leftovers. I'm not sentimental about ripping the book up, but I am about putting the pages in recycling. How odd of me.