Apparently, you are choosing between Bitcoin and USD on the basis of which is a better currency between the two. Furthermore, on that basis, the ability to spend it anywhere is being given a certain weight. I am also for USD, on that basis at least. You can indeed spend USD wherever you are. That is certainly more convenient to use as a currency. However, on the basis of value, I would not think twice of choosing Bitcoin over USD. And on the basis of ownership, Bitcoin is owned by me and USD is not. And so I would choose BTC over USD.