There are some who believed that it will be used in 2022, most of bitcoins users believes that idea, in fact they found the similarity of it when emails are still new. At late 1990's people used to laugh about what email can do they found it ridiculous and just a waste of time, but look at now people nowadays are all using emails as a sign of communication and transaction. Same as bitcoin if you ask a person what bitcoin is they have no idea and when you teach them they'll just say it is just a waste of time and say HA-HA. I believe that in that year people will use bitcoin it is because it is a digital money that connects people around the world without any hustle. And it has potential assets that paper money cannot do.