You can get a 3% discount by using Bitcoin:
Coinbase (-1%) -> Gyft (+4%) -> Amazon/BurgerKing/Sears/GAP/Groupon
All transactions have a ~3% credit card tax (even if you pay with cash). With Bitcoin, you can avoid this tax and get the discount.
Try sending money to a family member in Africa, then understand why PayPal and credit card are bad.
If you have qualms with bitcoins (the unit), then hold them for less than a minute and don't expose yourself to the exchange risk as you use the Bitcoin payment network to transfer value.
Finally, Bitcoin is FAR FAR from anonymous, it is as public as it could possibly be (everybody everywhere has an index of every transaction!!).
Thank you for your comments, I hope mine helped.