Bitcoin is changing the world as we know it and I love it. People around me are changing as they know I have been talking about Bitcoin for years so they know now I'm the guy with the answers.
I think that bitcoin definitely will change the world because in the future bitcoin will probably be the main paying method in the world. Because it is really popular right now. And when everyone starts to know how bitcoin works a lot can happen.
I do not think bitcoin can be applied to real life for billing, because the current bitcoin transaction fee is too high, more and more bitcocin value is increasing.