1. you want to play back DVD-dummies
2. you want to impress visitors from all over, quite distant lands
3. you read prefer
4. you belong to a religion that prohibits the technique
5. you are being Dadaist
6. it has films by Uwe Boll or Roland Emmerich
7. it is considering the purchase of a real player, but will only slowly used to the idea
8. one suffers from a phobia and wants to desensitize in small steps
9. has concocted a complex string, in which his critically ill heart Erbonkel the device with the words "That was expensive - do not drop" pressed into his hand, and then let his little sister suddenly jump out of the closet, so that the device falls to the ground with a clatter and the financial future of the family is secured
10. one is blind