In addition to the long list of illegal products and services that people want to hide, what about perfectly legal ones that are too slow, too expensive, or just plain impossible with other payment methods?

Next month I'll need Swiss francs for a trip to Zurich.  Would a bitcoin trade be cheaper than paying 3% plus a rotten exchange rate on my ATM card? Not to mention the inconvenience of making multiple ATM visits over multiple days due to the low daily withdrawal limit.

Bitcoin could also be much cheaper and more convenient for very small transactions like paying for one-time use electronic content. What if I could get a 3-minute video chat with a Zurich resident to find the perfect restaurant? Or what if I want a 10-min international phone card PIN? A payment method with no intermediaries and no fees should be faster and cheaper.

And person-to-person payments are much easier and less expensive than other methods.