I use bitcoin as an investment place only and I forget it to pay something that I want. Actually, I don't like to buy something through online shop and anything related to it. I'm scared if I buy a stuff and when it comes to my hand it is different and far from my expectation. I believe bitcoin will be use by most its user as an investment place. They will buy something with use money fiat that common to use and there is no someone who will forbid it.