by 2022? in 6 years? Hardly so...
by 2030 - yes, very likelly.
by 2050 - VERY sure. Not even small doubt. FIAT will be found only in the history books by 2050
I think there is a very good chance the last prediction is true.
Everything will be digital by then and we can say goodbye to paper money as there won't be any trees left by then

You guys act like its back to the future or something..
The present day as we live now, is almost all things are digital as it is...
eg: when you use a creditcard thats pretty much #`s on a screen. the only time you do see physical cash is when you take it out of your bank which you already know, and pay the teller cash payment.
and this is pretty much gone since they promote chase customers or any bank they issue to get on a checkings account.