Hurricane season and electrical outages won't wipe out your Amazon library (stored in the cloud), while a hurricane might wipe out your paper library. Also, it

Hurricane season and electrical outages won't wipe out your Amazon library (stored in the cloud), while a hurricane might wipe out your paper library. Also, it might actually be easier to find a 30 year old book on Amazon than a paper version. On the other hand, Amazon going bankrupt will wipe out your cloud library. BTW, 20 years ago was 1994, and PDF was initially released in 1993.