Telling to your friends or posting ,tweeting about earning on bitcoins is a good thing as promoting bitcoins so many people will get curious about it. As of now i saw many of my friends on fb are using and posting about bitcoins . By 2022 it is nearly possible. Definitely ,cause investors are attracted to where they will earn .So if bitcoin continously get higher and higher by that time many establishments are accepting bitcoins and more peoples are mostly doing bitcoins.