For me it's must being part of this revolution.
There is not much usability. But yet I believe it will come.
Uow, just take a deeper look at this forum and you'll find a thousand usabilities to it! Investment, buying stuff from people across the globe, borrow money, etc etc...
Well of course you can buy lots of things on this forum but it's tiny in the grand scheme of things. For it be seen as a proper currency by the mainstream it's going to need to be accepted on the high-street and many more online sites and not just the niche few we have at the moment. It wlil hopefully get there eventually but it's not going to happen overnight.