I have no use for this "cash" you speak of.

That is aright for some! Some of us are forced to to keep our homes and stop from getting our asses put in prison for not paying bills, I am looking forward for the day when all bills can be payed by Bitcoin though because cash/fiat they have forced us to use is history and i don't want to be part of their control anymore it is like i said though for now we are forced to :/