Bests & Worsts Reviews from Amazon

If I buy a e-book I must have the possibility to own it life long, its endurability must not be limited to the life span of this Kindle reader. You can lose it, it can be stolen, it can be damaged and then you loss a lot of books stored in it, since you cannot make a back up of it. And I cannot share the book with my friend. Inj fact you borrow the book. Better borrow a book from the library for far less money.