assuming there are lots of bitcoin retail options (only one in my town and that is me), there are definitely scenarios where using bitcoin is preferable to dollars even if btc is to rise rapidly. some are futuristic: 1. merchant discount (from, say, no chargebacks) 2. merchant slight discount where the cost of not using credit payment processor savings is passed onto consumer 3. ease of use (I would like to touch my smartphone screen to pay for something) 4. more bitcoin exchanges make procurement freeish and immediate (possibly through an app) 5. quasi anonymity (buying something no one else has to know about). 6. ?