If you purchase a physical copy of a book then the purchased copy becomes your property. You can lend or if you are so inclined destroy the book as it is yours to do with as you please provided that you do not copy or pass the work off as your own. The position as regards e-books is not so straightforward. On purchasing an e-book the buyer gains the right to access the content but not to lend or otherwise distribute it. I must confess to having been under the impression that the right to read my e-book library perishes when I draw my final breath. However according to an interesting article Amazon confirm that it is possible to leave your e-book library to your heir, http://www.dailykos.com/story/2013/05/08/1205979/-e-books-who-owns-my-digital-library.
As an author and reader of e-books I believe that an electronic book should be viewed as the property of the purchaser provided that he or she does not pass the work off as their own or copy the book. To me it is fundamentally unfair to pay for a product only to be told that you do not, in fact own it. Consequently I am somewhat reassured by Amazon’s statement that e-books can be passed on to one’s heir. I guess the interesting question is what happens if Amazon goes out of business. Unlikely in the near future but stranger things have happened.
(My collection of short stories, “The First Time” is free in the Amazon Kindle store from 4-8 October, http://newauthoronline.com/2013/10/04/free-book-promotion/).