A global financial currency can surely give the world many times the value of Facebook. But the price increase does not represent interest in Bitcoin as a currency, but instead as a speculative investment vehicle and/or store of value. You yourself talked about not exchanging your bitcoins: it sounds like you wish to own bitcoins, but not circulate or spend them. They are not a currency for you.

This is as predicted by those who say that Bitcoin is a deflationary currency.