The reality is that, why should people be buying water bottles with Bitcoin? If we consider the practicality of it all, why should we choose Bitcoin as payment for our cup of coffee? Sometimes I wonder whether those videos of children buying a piece of banana or a glass of lemonade using Bitcoin is the best way to promote Bitcoin. Cold cash would be best. Perhaps Bitcoin's whitepaper is where the point is, that it is an electronic cash, that it is for online payments, for eCommerce purposes.